Gaya APA
Zarkasyi, M, R.
(2017).
Ajaran Kiai Gontor : 72 Prinsip Ajaran KH. Imam Zarkasyi
.
Indonesia:
Rene Book.
Gaya MLA
Zarkasyi, Muhammad, Ridlo.
"Ajaran Kiai Gontor : 72 Prinsip Ajaran KH. Imam Zarkasyi".
Indonesia:
Rene Book,
2017.
.