APA (7th ed.) Citation

Welford, W. T. (1991). Aberrations of optical systems (Amended reprint.). Hilger.

Chicago Style (17th ed.) Citation

Welford, Walter T. Aberrations of Optical Systems. Amended reprint. Bristol [u.a.]: Hilger, 1991.

MLA (9th ed.) Citation

Welford, Walter T. Aberrations of Optical Systems. Amended reprint. Hilger, 1991.

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