Cita APA (7th ed.)

Zikmund, W. G. (2009). Essentials of Marketing Research. Cengage.

Cita Chicago (17th ed.)

Zikmund, William G. Essentials of Marketing Research. Delhi: Cengage, 2009.

Cita MLA (9th ed.)

Zikmund, William G. Essentials of Marketing Research. Cengage, 2009.