GYM, A. (2006). Qalbu Marketing, Tujuh Kunci Menuju Kemenangan. Hikmah.
Chicago Style (17th ed.) CitationGYM, Aa. Qalbu Marketing, Tujuh Kunci Menuju Kemenangan. Hikmah, 2006.
MLA (8th ed.) CitationGYM, Aa. Qalbu Marketing, Tujuh Kunci Menuju Kemenangan. Hikmah, 2006.
Warning: These citations may not always be 100% accurate.