Gaya APA

Duke-Elder, S, S., Abrams, D. (1970). Ophthalmic optics and Refraction: system of ophthalmology Vol. V . St. Louis: The C.V. Mosby Company.

Gaya MLA

Duke-Elder, Sir, Stewart., Abrams, David. "Ophthalmic optics and Refraction: system of ophthalmology Vol. V". St. Louis: The C.V. Mosby Company, 1970. Text.