diff --git a/src/bibliography/bib_types/in_book.rs b/src/bibliography/bib_types/in_book.rs
new file mode 100644
index 0000000..33ce486
--- /dev/null
+++ b/src/bibliography/bib_types/in_book.rs
@@ -0,0 +1,32 @@
+use crate::bibliography::bib_types::LocalDate;
+
+/// Source that is part of a book
+#[derive(Clone, Debug)]
+pub struct InBook {
+    pub author: String,
+    pub title: String,
+    pub position: String,
+    pub publisher: String,
+    pub date: LocalDate,
+    pub volume: Option<String>,
+    pub series: Option<String>,
+    pub address: Option<String>,
+    pub edition: Option<String>,
+}
+
+impl InBook {
+    /// Creates a new InBook source with only the mandatory values filled
+    pub fn new(author: String, title: String, position: String, publisher: String, date:LocalDate) -> Self {
+        Self {
+            author,
+            title,
+            position,
+            publisher,
+            date,
+            volume: None,
+            series: None,
+            address: None,
+            edition: None,
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/bibliography/bib_types/mod.rs b/src/bibliography/bib_types/mod.rs
index e1ff97e..73a1a42 100644
--- a/src/bibliography/bib_types/mod.rs
+++ b/src/bibliography/bib_types/mod.rs
@@ -2,10 +2,12 @@ use crate::bibliography::bib_types::article::Article;
 use crate::bibliography::bib_types::book::Book;
 use chrono::{Date, Local};
 use crate::bibliography::bib_types::booklet::Booklet;
+use crate::bibliography::bib_types::in_book::InBook;
 
 pub mod article;
 pub mod book;
 pub mod booklet;
+pub mod in_book;
 
 pub type LocalDate = Date<Local>;
 
@@ -15,7 +17,7 @@ pub enum BibliographyType {
     Article(Article),
     Book(Book),
     Booklet(Booklet),
-    InBook,
+    InBook(InBook),
     InCollection,
     Manual,
     Thesis,