Gaya APA

Al-Kaff, H, A. (2009). Where There Is a Problem There Is a Solution (Cet. 1). Yogyakarta: B.H.S Media.

Gaya MLA

Al-Kaff, Hasan, Abdullah. "Where There Is a Problem There Is a Solution". Cet. 1 Yogyakarta: B.H.S Media, 2009. Text.