Gaya APA
Barton, G.
(2017).
Biografi : Gus Dur (The Authorized Biography of Abdurrahman Wahid)
.
Depok:
Mahabah.
Gaya MLA
Barton, Greg.
"Biografi : Gus Dur (The Authorized Biography of Abdurrahman Wahid)".
Depok:
Mahabah,
2017.
Textbook.