Gaya APA
Barton, G. et al (2017).
Biografi Gus Dur : the authorized biografhy of Abdurrahman Wahid .
Yogyakarta:
Mahabbah.
Gaya MLA
Barton, Greg. et al.
"Biografi Gus Dur : the authorized biografhy of Abdurrahman Wahid".
Yogyakarta:
Mahabbah,
2017.
Text.