Gaya APA

Abdullah, A, F. (2014). Keep Positive Thinking : 20 Tips Membangun Kepribadian Islami . : Gema Insani.

Gaya MLA

Abdullah, Adil, Fathi. "Keep Positive Thinking : 20 Tips Membangun Kepribadian Islami". : Gema Insani, 2014. Text.