SEKARAN, U. (2003). Research methods for business: A skill-building approach (4th ed.). John Wiley & Sons.
Chicago Style aipamenaSEKARAN, Uma. Research Methods for Business: A Skill-building Approach. 4th ed. New York: John Wiley & Sons, 2003.
MLA aipamenaSEKARAN, Uma. Research Methods for Business: A Skill-building Approach. 4th ed. John Wiley & Sons, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.