Gaya APA

Russell, F, A. (1987). Textbook of Salesmanship: Grolier Business Library . USA: Mc Graw Hill.

Gaya MLA

Russell, Frederic, A.. "Textbook of Salesmanship: Grolier Business Library". USA: Mc Graw Hill, 1987. GEN - Bacaan/Seri Non-Fiksi.