Παραπομπή APA

Mitchell, G. (1972). Operational research: Techniques and examples. English Universtities.

Παραπομπή Chicago Style

Mitchell, G.H. Operational Research: Techniques and Examples. London: English Universtities, 1972.

Παραπομπή MLA

Mitchell, G.H. Operational Research: Techniques and Examples. English Universtities, 1972.