Gaya APA

Kahn, G, N., Haryani, Y, S. (1982). 36 kesalahan terbesar para penjual dan cara membetulkannya = the 36 biggest mistakes salesmen make and how to correct them . Jakarta: P.T. Gramedia.

Gaya MLA

Kahn, George, N.., Haryani, Yulia, Sri. "36 kesalahan terbesar para penjual dan cara membetulkannya = the 36 biggest mistakes salesmen make and how to correct them". Jakarta: P.T. Gramedia, 1982. Text.