Gaya APA

Cotton, D., Simon, I, F, D, I, K. (2008). Market leader : pre-intermediate business English course book . Longman, 2008: Longman, 2008.

Gaya MLA

Cotton, David., Simon, I., Falvey,, David, II., Kent,. "Market leader : pre-intermediate business English course book". Longman, 2008: Longman, 2008, 2008. .