APA Style

Duckworth, Eric. (1965). A Guide To Operational Research (Second Edition). London: Methuen & Co. Ltd..

Chicago Style

Duckworth, Eric. A Guide To Operational Research. Second Edition London: Methuen & Co. Ltd., 1965. Print.

MLA Style

Duckworth, Eric. A Guide To Operational Research. Second Edition London: Methuen & Co. Ltd., 1965. Print.

Turabian Style

Duckworth, Eric. A Guide To Operational Research. Second Edition London: Methuen & Co. Ltd., 1965. Print.