Παραπομπή APA

Rivett, P. (1968). Concepts of operational research. C A Watts.

Παραπομπή Chicago Style

Rivett, Patrick. Concepts of Operational Research. London: C A Watts, 1968.

Παραπομπή MLA

Rivett, Patrick. Concepts of Operational Research. C A Watts, 1968.