Παραπομπή APA

Halley, K. (1973). Operations research quartely. Pengamon press oxford.

Παραπομπή Chicago Style

Halley, K.B. Operations Research Quartely. London: Pengamon press oxford, 1973.

Παραπομπή MLA

Halley, K.B. Operations Research Quartely. Pengamon press oxford, 1973.