Gaya APA

Rudelius, E, N, B, ;, R, A, K, ;, W. (1989). Marketing ed. 2 (ed. 2). America: Irwin.

Gaya MLA

Rudelius, Eric, N., Berkowitz, ;, Roger, A., Kerin, ;, William. "Marketing ed. 2". ed. 2 America: Irwin, 1989. Text.