Gaya APA

Block, C, , E., Roering, K, J. (1979). Essentials of consumer behavior : concepts and applications (2nd. ed.). Hinsdale, Ill: The Dryden Press.

Gaya MLA

Block, Carl, , E., Roering, Kenneth, J.. "Essentials of consumer behavior : concepts and applications". 2nd. ed. Hinsdale, Ill: The Dryden Press, 1979. Text.