APA (7th ed.) Citation

Watkins, D. (1978). The focalguide to colour film processing. Focal Press.

Chicago Style (17th ed.) Citation

Watkins, Derek. The Focalguide to Colour Film Processing. London [etc.]: Focal Press, 1978.

MLA (9th ed.) Citation

Watkins, Derek. The Focalguide to Colour Film Processing. Focal Press, 1978.

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