Gaya APA
Barton, G. (2017).
Biografi Gus Dur The Authorized Biography of Abdurrahman of Abdurrahman Wahid .
Yogyakarya:
Mahabbah.
Gaya MLA
Barton, Greg.
"Biografi Gus Dur The Authorized Biography of Abdurrahman of Abdurrahman Wahid".
Yogyakarya:
Mahabbah,
2017.
Buku.