Gaya APA

Berkowitz, E, N., Rudelius, W. (1989). Marketing (2nd ed.). Homewood, IL: Richard D. Irwin, c.

Gaya MLA

Berkowitz, Eric, N.., Rudelius, William. "Marketing". 2nd ed. Homewood, IL: Richard D. Irwin, c, 1989. Buku Wajib.