APA استشهاد

Luck, D. J., & Day, G. S. (1974). Marketing Research (4.).

استشهاد بنمط شيكاغو

Luck, David J., و George S. Day. Marketing Research. 4. :, 1974.

MLA استشهاد

Luck, David J., و George S. Day. Marketing Research. 4. 1974.