APA Edition Citation

Duckworth, W. E. (1972). A guide to operational research. Methuen & Co..

Chicago Edition Citation

Duckworth, W. E. A Guide to Operational Research. Methuen & Co., 1972.

MLA Edition Citation

Duckworth, W. E. A Guide to Operational Research. Methuen & Co., 1972.

Warning: These citations may not always be 100% accurate.