APA (7th ed.) Citation

Clarke, D. (1977). The Encyclopedia of how it works from abacus to zoom lens. A & W Publishers.

Chicago Style (17th ed.) Citation

Clarke, Donald. The Encyclopedia of How It Works from Abacus to Zoom Lens. New York: A & W Publishers, 1977.

MLA (9th ed.) Citation

Clarke, Donald. The Encyclopedia of How It Works from Abacus to Zoom Lens. A & W Publishers, 1977.

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