LEWIS, G. (1992). Taktik Menetapkan Harga. P.T. Gramedia.
Chicago Style (17th ed.) CitationLEWIS, Gregory. Taktik Menetapkan Harga. P.T. Gramedia, 1992.
MLA (8th ed.) CitationLEWIS, Gregory. Taktik Menetapkan Harga. P.T. Gramedia, 1992.
Warning: These citations may not always be 100% accurate.