Litteratur:
Clarke, Graham : The Photograph, Oxford History of Art, 1997. (246 s. Ill.).
Barrett, Terry Michael: Criticizing Photographs: An Introduction to Understanding Images. 4th ed, New York: 2006. McGraw-Hill Higher Education.
Larsen, Peter: Album: Fotografiske motiver, Oslo:2004. Spartacus forlag.
Marien, Mary Warner: Photography: A Cultural History. 3rd ed. , 2010. Prentice Hall.
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