Gaya APA

harahap, S., nasution, H, B. (2009). Ensiklopedia akidah islam (Ed.1, cet.2). Jakarta: Kencana Prenada Media Group.

Gaya MLA

harahap, Syahrin., nasution, Hasan, Bakti. "Ensiklopedia akidah islam". Ed.1, cet.2 Jakarta: Kencana Prenada Media Group, 2009. Text.