Gaya APA

RUSSELL, F, A., BEACH, F, H. (1961). Textbook of Salesmanship (6th.ed). New York: McGraw-Hill Book Company, INC.

Gaya MLA

RUSSELL, Frederic, A.., BEACH, Frank, H.. "Textbook of Salesmanship". 6th.ed New York: McGraw-Hill Book Company, INC, 1961. .