Cita APA (7th ed.)

Kerin, R. A., & Hartley, S. W. Marketing: The core (International Student Edition.).

Cita Chicago (17th ed.)

Kerin, Roger A., i Steven W. Hartley. Marketing: The Core. International Student Edition.

Cita MLA (9th ed.)

Kerin, Roger A., i Steven W. Hartley. Marketing: The Core. International Student Edition.