APA

Welford W. T., Welford W. T. & Winston R. (1978). The optics of nonimaging concentrators. New York [u.a.]: Academic Press.

Chicago

Welford Walter T, Welford Walter T and Winston Roland. 1978. The optics of nonimaging concentrators. New York [u.a.]: Academic Press.

Harvard

Welford W. T., Welford W. T. and Winston R. (1978). The optics of nonimaging concentrators. New York [u.a.]: Academic Press.

MLA

Welford Walter T, Welford Walter T and Winston Roland. The optics of nonimaging concentrators. New York [u.a.]: Academic Press. 1978.