APA استشهاد

Levin, R. e. a. (1992). Quantitative approaches to management (8th ed.). Mc Graw Hill.

استشهاد بنمط شيكاغو

Levin, Richard et al. Quantitative Approaches to Management. 8th ed. New York: Mc Graw Hill, 1992.

MLA استشهاد

Levin, Richard et al. Quantitative Approaches to Management. 8th ed. Mc Graw Hill, 1992.