Denny, R. (2007). Succeed for Yourself: Membuka Kunci Potensi Kesuksesan dan Kebahagiaan Anda. Gramedia Pustaka Utama.
Chicago Style (17th ed.) CitationDenny, Richard. Succeed for Yourself: Membuka Kunci Potensi Kesuksesan Dan Kebahagiaan Anda. Gramedia Pustaka Utama, 2007.
MLA (8th ed.) CitationDenny, Richard. Succeed for Yourself: Membuka Kunci Potensi Kesuksesan Dan Kebahagiaan Anda. Gramedia Pustaka Utama, 2007.
Warning: These citations may not always be 100% accurate.