APA (7th ed.) Citation

Spencer, D. A. (1973). The Focal dictionary of photographic techniques. Focal Press.

Chicago Style (17th ed.) Citation

Spencer, Douglas Arthur. The Focal Dictionary of Photographic Techniques. London: Focal Press, 1973.

MLA (9th ed.) Citation

Spencer, Douglas Arthur. The Focal Dictionary of Photographic Techniques. Focal Press, 1973.

Warning: These citations may not always be 100% accurate.