Berkowitz, E. N. (2000). Marketing (6th ed.). McGraw-Hill/Irwin.
Cita Chicago (17th ed.)Berkowitz, Eric N. Marketing. 6th ed. Boston: McGraw-Hill/Irwin, 2000.
Cita MLA (9th ed.)Berkowitz, Eric N. Marketing. 6th ed. McGraw-Hill/Irwin, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.