Schiffman. (2000). 25 tabiat penjualan: Jurujual paling berjaya. Synergy Books Int.
Chicago Style (17th ed.) CitationSchiffman. 25 Tabiat Penjualan: Jurujual Paling Berjaya. Kuala Lumpur: Synergy Books Int, 2000.
MLA (8th ed.) CitationSchiffman. 25 Tabiat Penjualan: Jurujual Paling Berjaya. Synergy Books Int, 2000.
Warning: These citations may not always be 100% accurate.