John. (1996). Mantra menjual. Gramedia Pustaka Utama.
Chicago Style (17th ed.) CitationJohn. Mantra Menjual. Gramedia Pustaka Utama, 1996.
MLA (8th ed.) CitationJohn. Mantra Menjual. Gramedia Pustaka Utama, 1996.
Warning: These citations may not always be 100% accurate.