Gaya APA

AZIZI, A, S, A. (2021). Biografi Lengkap Umar Bin Khattab Keteguhan Hati Singa Nabi (Cet.1). Yogyakarta: DIVA PRESS.

Gaya MLA

AZIZI, ABDUL, SYUKUR, AL. "Biografi Lengkap Umar Bin Khattab Keteguhan Hati Singa Nabi". Cet.1 Yogyakarta: DIVA PRESS, 2021. Text.