Gaya APA

Daniel, I, B, P, M, D, A. (1994). American business english program: course book pre-intermediate . London: Macmillan Publishing.

Gaya MLA

Daniel, Ian, Badger;, Pete, Menzies;, David, A.. "American business english program: course book pre-intermediate". London: Macmillan Publishing, 1994. Text.