Cita APA (7a ed.)

Zikmund,William G. (2013). Essentials of Marketing Research (5th.). Cengage Learning.

Cita Chicago Style (17a ed.)

Zikmund,William G. Essentials of Marketing Research. 5th. Australia: Cengage Learning, 2013.

Cita MLA (9a ed.)

Zikmund,William G. Essentials of Marketing Research. 5th. Cengage Learning, 2013.