APA Style

Barton, G. (2021). Biografi Gus Dur : the authorized biography of Abdurrahman Wahid . Yogyakarta: LKiS Yogyakarta.

MLA Style

Barton, Greg. "Biografi Gus Dur : the authorized biography of Abdurrahman Wahid". Yogyakarta: LKiS Yogyakarta, 2021. Text.