Gaya APA

Shook, R, L. (1986). The Perfect Sales Presentation : These Five Top Sales Professionals Show You Step By Step, How To Sell Successfully . New York: Bata,m Books.

Gaya MLA

Shook, Robert, L. "The Perfect Sales Presentation : These Five Top Sales Professionals Show You Step By Step, How To Sell Successfully". New York: Bata,m Books, 1986. Text.