Gaya APA

Muhammad, Q, I. (2002). Kebijakan ekonomi Umar Bin Khatab/ Quthb Ibrahim Muhammad (Ed. 1). Jakarta: .

Gaya MLA

Muhammad, Quthb, Ibrahim. "Kebijakan ekonomi Umar Bin Khatab/ Quthb Ibrahim Muhammad". Ed. 1 Jakarta: , 2002. Text.