APA (7th ed.) Citation

Edward Arnold, French, S., Hartley, R. J., Thomas, L. C., & White, D. J. (1991). Operational research techniques. Edward Arnold.

Chicago Style (17th ed.) Citation

Edward Arnold, S. French, R. J. Hartley, L. C. Thomas, and D. J. White. Operational Research Techniques. London: Edward Arnold, 1991.

MLA (8th ed.) Citation

Edward Arnold, et al. Operational Research Techniques. Edward Arnold, 1991.