Gernsheim, H., & Gernsheim, A. (1955). The history of photography from the earliest use of the camera obscura in the eleventh century up to 1914. Oxford University Press.
Chicago Style (17th ed.) CitationGernsheim, Helmut, and Alison Gernsheim. The History of Photography from the Earliest Use of the Camera Obscura in the Eleventh Century Up to 1914. London: Oxford University Press, 1955.
MLA (9th ed.) CitationGernsheim, Helmut, and Alison Gernsheim. The History of Photography from the Earliest Use of the Camera Obscura in the Eleventh Century Up to 1914. Oxford University Press, 1955.
Warning: These citations may not always be 100% accurate.