Wentz, W. B. (1975). Cases in marketing research. Happer & Row.
Chicago Style aipamenaWentz, Walter B. Cases in Marketing Research. New York: Happer & Row, 1975.
MLA aipamenaWentz, Walter B. Cases in Marketing Research. Happer & Row, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.