APA (7th ed.) Citation

Gernsheim, H., & Gernsheim, A. (1956). L. J. M. Daguerre (1787-1851), the world's first photographer. World Pub. Co..

Chicago Style (17th ed.) Citation

Gernsheim, Helmut, and Alison Gernsheim. L. J. M. Daguerre (1787-1851), the World's First Photographer. Cleveland: World Pub. Co., 1956.

MLA (9th ed.) Citation

Gernsheim, Helmut, and Alison Gernsheim. L. J. M. Daguerre (1787-1851), the World's First Photographer. World Pub. Co., 1956.