Παραπομπή APA

Sasieni, M., Yaspan, A., & Friedman, L. (1959). Operation research: :methods and problems. Toppan.

Παραπομπή Chicago Style

Sasieni, Mourice, Arthur Yaspan, και Lawerence Friedman. Operation Research: :methods and Problems. New Yprk: Toppan, 1959.

Παραπομπή MLA

Sasieni, Mourice, et al. Operation Research: :methods and Problems. Toppan, 1959.