Elfiky, I. (2014). Terapi berpikir positif. Zaman.
Chicago Style (17th ed.) CitationElfiky, Ibrahim. Terapi Berpikir Positif. Zaman, 2014.
MLA (8th ed.) CitationElfiky, Ibrahim. Terapi Berpikir Positif. Zaman, 2014.
Warning: These citations may not always be 100% accurate.