Gaya APA
Barton, G. (2011).
Boigrafi Gus Dur : the authorized biography of Abdurrahman Wahid (Cet. 10).
Yogyakarta :
LKIS.
Gaya MLA
Barton, Greg.
"Boigrafi Gus Dur : the authorized biography of Abdurrahman Wahid".
Cet. 10
Yogyakarta :
LKIS,
2011.
Buku.