diff --git a/README.md b/README.md
index 4fb1afc..b02c006 100644
--- a/README.md
+++ b/README.md
@@ -13,3 +13,74 @@ sv-parser = "0.1.0"
 ```
 
 ## Example
+
+```rust
+use std::collections::HashMap;
+use std::convert::TryInto;
+use std::env;
+use std::path::PathBuf;
+use sv_parser::{parse_sv, Locate, RefNode};
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    // The path of SystemVerilog source file
+    let path = PathBuf::from(&args[1]);
+    // The list of defined macros
+    let defines = HashMap::new();
+    // The list of include paths
+    let includes: Vec<PathBuf> = Vec::new();
+
+    // Do parse
+    let result = parse_sv(&path, &defines, &includes);
+
+    if let Ok((syntax_tree, _)) = result {
+        // SyntexTree is iterable
+        for node in &syntax_tree {
+            // The type of Each node is RefNode
+            match node {
+                RefNode::ModuleDeclarationNonansi(x) => {
+                    // The type of header is ModuleNonansiHeader
+                    let (ref header, _, _, _, _) = x.nodes;
+                    // The type of name is ModuleIdentifier
+                    let (_, _, _, ref name, _, _, _, _) = header.nodes;
+
+                    // Any type included in SyntaxTree can be convert RefNode by into()
+                    let id = get_identifier(name.into()).unwrap();
+
+                    // Original string can be got by SyntexTree::get_str(self, locate: &Locate)
+                    let id = syntax_tree.get_str(&id);
+                    println!("module: {}", id);
+                }
+                RefNode::ModuleDeclarationAnsi(x) => {
+                    let (ref header, _, _, _, _) = x.nodes;
+                    let (_, _, _, ref name, _, _, _, _) = header.nodes;
+                    let id = get_identifier(name.into()).unwrap();
+                    let id = syntax_tree.get_str(&id);
+                    println!("module: {}", id);
+                }
+                _ => (),
+            }
+        }
+    } else {
+        println!("Parse failed");
+    }
+}
+
+fn get_identifier(node: RefNode) -> Option<Locate> {
+    for n in node {
+        match n {
+            RefNode::SimpleIdentifier(x) => {
+                let x: Locate = x.nodes.0.try_into().unwrap();
+                return Some(x);
+            }
+            RefNode::EscapedIdentifier(x) => {
+                let x: Locate = x.nodes.0.try_into().unwrap();
+                return Some(x);
+            }
+            _ => (),
+        }
+    }
+    None
+}
+```
diff --git a/sv-parser/examples/module_list.rs b/sv-parser/examples/module_list.rs
new file mode 100644
index 0000000..b8d16db
--- /dev/null
+++ b/sv-parser/examples/module_list.rs
@@ -0,0 +1,68 @@
+use std::collections::HashMap;
+use std::convert::TryInto;
+use std::env;
+use std::path::PathBuf;
+use sv_parser::{parse_sv, Locate, RefNode};
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    // The path of SystemVerilog source file
+    let path = PathBuf::from(&args[1]);
+    // The list of defined macros
+    let defines = HashMap::new();
+    // The list of include paths
+    let includes: Vec<PathBuf> = Vec::new();
+
+    // Do parse
+    let result = parse_sv(&path, &defines, &includes);
+
+    if let Ok((syntax_tree, _)) = result {
+        // SyntexTree is iterable
+        for node in &syntax_tree {
+            // The type of Each node is RefNode
+            match node {
+                RefNode::ModuleDeclarationNonansi(x) => {
+                    // The type of header is ModuleNonansiHeader
+                    let (ref header, _, _, _, _) = x.nodes;
+                    // The type of name is ModuleIdentifier
+                    let (_, _, _, ref name, _, _, _, _) = header.nodes;
+
+                    // Any type included in SyntaxTree can be convert RefNode by into()
+                    let id = get_identifier(name.into()).unwrap();
+
+                    // Original string can be got by SyntexTree::get_str(self, locate: &Locate)
+                    let id = syntax_tree.get_str(&id);
+                    println!("module: {}", id);
+                }
+                RefNode::ModuleDeclarationAnsi(x) => {
+                    let (ref header, _, _, _, _) = x.nodes;
+                    let (_, _, _, ref name, _, _, _, _) = header.nodes;
+                    let id = get_identifier(name.into()).unwrap();
+                    let id = syntax_tree.get_str(&id);
+                    println!("module: {}", id);
+                }
+                _ => (),
+            }
+        }
+    } else {
+        println!("Parse failed");
+    }
+}
+
+fn get_identifier(node: RefNode) -> Option<Locate> {
+    for n in node {
+        match n {
+            RefNode::SimpleIdentifier(x) => {
+                let x: Locate = x.nodes.0.try_into().unwrap();
+                return Some(x);
+            }
+            RefNode::EscapedIdentifier(x) => {
+                let x: Locate = x.nodes.0.try_into().unwrap();
+                return Some(x);
+            }
+            _ => (),
+        }
+    }
+    None
+}