APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Spencer, D. A. The Focal Dictionary of Photographic Technologies. London: Focal Press, 1973.

MLA (9th ed.) Citation

Spencer, D. A. The Focal Dictionary of Photographic Technologies. Focal Press, 1973.

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