APA استشهاد

Day , R. .. A., & Underwood , A. .. L. (1988). Quantitative analysis (5th ed.). Prentice hallof India.

استشهاد بنمط شيكاغو

Day , R . A., و A . L. Underwood. Quantitative Analysis. 5th ed. New Delhi: Prentice hallof India, 1988.

MLA استشهاد

Day , R . A., و A . L. Underwood. Quantitative Analysis. 5th ed. Prentice hallof India, 1988.