APA استشهاد

Wentz, W. B. (1972). Marketing research: Management and methods. Happer & Row.

استشهاد بنمط شيكاغو

Wentz, Walter B. Marketing Research: Management and Methods. New York: Happer & Row, 1972.

MLA استشهاد

Wentz, Walter B. Marketing Research: Management and Methods. Happer & Row, 1972.