Gaya APA

Drummond, G., John, I, E. (2005). Introduction to marketing concepts . Amsterdam: Amsterdam: Elsevier Butterworth heinemann, 2005.

Gaya MLA

Drummond, Graeme., John, I., Ensor,. "Introduction to marketing concepts". Amsterdam: Amsterdam: Elsevier Butterworth heinemann, 2005, 2005. Text.