Cita APA (7th ed.)

Berkowitz, E. N. (1989). Marketing (2nd ed.). Irwin.

Cita Chicago (17th ed.)

Berkowitz, Eric N. Marketing. 2nd ed. Homewood, Ill: Irwin, 1989.

Cita MLA (9th ed.)

Berkowitz, Eric N. Marketing. 2nd ed. Irwin, 1989.