Caldwell, L. K. (1970). Environment: A challenge for modern society. Pub. for the American Museum of Natural History [by] the Natural History Press.
Chicago-referens (17:e uppl.)Caldwell, Lynton Keith. Environment: A Challenge for Modern Society. Garden City, N.Y: Pub. for the American Museum of Natural History [by] the Natural History Press, 1970.
MLA-referens (9:e uppl.)Caldwell, Lynton Keith. Environment: A Challenge for Modern Society. Pub. for the American Museum of Natural History [by] the Natural History Press, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.