Gaya APA

Robinson, W, A., Carmack, L, L. (1991). Best Sales Promotions = Promosi Penjualan Terbaik . Jakarta: Elex Media Komputindo.

Gaya MLA

Robinson, William, A.., Carmack, Lynne, Lamb. "Best Sales Promotions = Promosi Penjualan Terbaik". Jakarta: Elex Media Komputindo, 1991. Text.