APA (7th ed.) Citation

Walls, H. J. (1954). Photo-technique: Fundamentals and equipment. Focal Press.

Chicago Style (17th ed.) Citation

Walls, Henry James. Photo-technique: Fundamentals and Equipment. London [u.a.]: Focal Press, 1954.

MLA (9th ed.) Citation

Walls, Henry James. Photo-technique: Fundamentals and Equipment. Focal Press, 1954.