APA-referens (7:e uppl.)

Welford, W. T. (1989). Aberrations of optical systems. A. Hilger.

Chicago-referens (17:e uppl.)

Welford, W. T. Aberrations of Optical Systems. Bristol ; Philadelphia: A. Hilger, 1989.

MLA-referens (9:e uppl.)

Welford, W. T. Aberrations of Optical Systems. A. Hilger, 1989.