Cita APA (7th ed.)

Zikmund, W. G. (1997). Business research methods (5th ed.). Dryden Press.

Cita Chicago (17th ed.)

Zikmund, William G. Business Research Methods. 5th ed. Fort Worth: Dryden Press, 1997.

Cita MLA (9th ed.)

Zikmund, William G. Business Research Methods. 5th ed. Dryden Press, 1997.