APA-referens (7:e uppl.)

Easwaran, S., & Singh, S. J. (2006). Marketing research: Concepts, practices, and cases. Oxford University Press.

Chicago-referens (17:e uppl.)

Easwaran, Sunanda, och Sharmila J. Singh. Marketing Research: Concepts, Practices, and Cases. Oxford ; New York: Oxford University Press, 2006.

MLA-referens (8:e uppl.)

Easwaran, Sunanda, och Sharmila J. Singh. Marketing Research: Concepts, Practices, and Cases. Oxford University Press, 2006.