Gaya APA

Jr., G, A, C. (1999). Marketing Research: Methodological Fondations 7 Edition (ed. 7). Philadelphia: The Dryden Press.

Gaya MLA

Jr., Gilbert, A., Churchill,. "Marketing Research: Methodological Fondations 7 Edition". ed. 7 Philadelphia: The Dryden Press, 1999. Buku E.Pembangunan.