APA (7th ed.) Citation

Fry, G. A., & Fry, G. A. (1970). Geometrical optics. Chilton Book.

Chicago Style (17th ed.) Citation

Fry, Glenn A., and Glenn A. Fry. Geometrical Optics. Philadelphia [u.a.]: Chilton Book, 1970.

MLA (9th ed.) Citation

Fry, Glenn A., and Glenn A. Fry. Geometrical Optics. Chilton Book, 1970.