APA (7th ed.) Citation

Gill, P. E., Murray, W., & Wright, M. H. (1981). Practical optimization. Academic Press.

Chicago Style (17th ed.) Citation

Gill, Philip E., Walter Murray, and Margaret H. Wright. Practical Optimization. London: Academic Press, 1981.

MLA (9th ed.) Citation

Gill, Philip E., et al. Practical Optimization. Academic Press, 1981.