Zikmund, W. G. (1984). Business research methods (4th ed.). Dryden press.
Chicago Edition CitationZikmund, William G. Business Research Methods. 4th ed. New York: Dryden press, 1984.
Cita MLAZikmund, William G. Business Research Methods. 4th ed. Dryden press, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.