APA (7th ed.) Citation

Welford, W. T. (1991). Useful optics. Univ. of Chicago Press.

Chicago Style (17th ed.) Citation

Welford, Walter T. Useful Optics. Chicago u.a: Univ. of Chicago Press, 1991.

MLA (9th ed.) Citation

Welford, Walter T. Useful Optics. Univ. of Chicago Press, 1991.

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