elfiky, D. i. (2009). terapi berpikir positif. zaman.
Chicago Style (17th ed.) Citationelfiky, Dr. ibrahim. Terapi Berpikir Positif. zaman, 2009.
MLA (8th ed.) Citationelfiky, Dr. ibrahim. Terapi Berpikir Positif. zaman, 2009.
Warning: These citations may not always be 100% accurate.