Gaya APA

Isa, S, A, Q., Harahap, K, A. (2011). Hakekat Tasawuf (-). Jakarta: Qisthi Press.

Gaya MLA

Isa, Syaikh, Abdul, Qadir., Harahap, Khairul, Amru. "Hakekat Tasawuf". - Jakarta: Qisthi Press, 2011. Text.