Cita APA (7th ed.)

Ray, S. F. (1992). The photographic lens (2nd ed.). Focal Press.

Cita Chicago (17th ed.)

Ray, Sidney F. The Photographic Lens. 2nd ed. Oxford: Focal Press, 1992.

Cita MLA (9th ed.)

Ray, Sidney F. The Photographic Lens. 2nd ed. Focal Press, 1992.