APA (7th ed.) Citation

Ray, S. F. (1979). The Focalguide to larger format cameras.

Chicago Style (17th ed.) Citation

Ray, Sidney F. The Focalguide to Larger Format Cameras. 1979.

MLA (9th ed.) Citation

Ray, Sidney F. The Focalguide to Larger Format Cameras. 1979.

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