Easwaran, S. S. (2009). Marketing ressearch: Concepts practices and cases.
Chicago Style aipamenaEaswaran, Sunanda; Singh. Marketing Ressearch: Concepts Practices and Cases. Oxford University Press, 2009.
MLA aipamenaEaswaran, Sunanda; Singh. Marketing Ressearch: Concepts Practices and Cases. 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.