Cita APA (7a ed.)

GZikmund, W. (2007). Essentials of marketing research (3.).

Cita Chicago Style (17a ed.)

GZikmund, William. Essentials of Marketing Research. 3. Australia, 2007.

Cita MLA (9a ed.)

GZikmund, William. Essentials of Marketing Research. 3. 2007.