APA (7th ed.) Citation

Urry, S. A. (1991). Introduction to operational research: The best of everything. Longman.

Chicago Style (17th ed.) Citation

Urry, S. A. Introduction to Operational Research: The Best of Everything. London: Longman, 1991.

MLA (9th ed.) Citation

Urry, S. A. Introduction to Operational Research: The Best of Everything. Longman, 1991.

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