Catalogue Persistent Identifier
https://nla.gov.au/nla.cat-vn1541877
APA Citation
Cahn, Robert. & Ketchum, Robert Glenn. & National Park Foundation. (1981). American photographers and the national parks. New York : Washington, D.C : Viking Press ; National Park Foundation
MLA Citation
Cahn, Robert. and Ketchum, Robert Glenn. and National Park Foundation. American photographers and the national parks / Robert Cahn, Robert Glenn Ketchum Viking Press ; National Park Foundation New York : Washington, D.C 1981
Australian/Harvard Citation
Cahn, Robert. & Ketchum, Robert Glenn. & National Park Foundation. 1981, American photographers and the national parks / Robert Cahn, Robert Glenn Ketchum Viking Press ; National Park Foundation New York : Washington, D.C
Wikipedia Citation
{{Citation | title=American photographers and the national parks / Robert Cahn, Robert Glenn Ketchum | author1=Cahn, Robert, 1917- | author2=Ketchum, Robert Glenn | author3=National Park Foundation | year=1981 | publisher=Viking Press ; National Park Foundation | language=English }}