Gaya APA
Barton, G. (2011).
Biografi Gus Dur: The Authorized Biography of Abdurrahman Wahid (Cet. X).
Gorontalo:
LKiS Yogyakarta.
Gaya MLA
Barton, Greg.
"Biografi Gus Dur: The Authorized Biography of Abdurrahman Wahid".
Cet. X
Gorontalo:
LKiS Yogyakarta,
2011.
Text.