Sherwood, G. H. (1920). Free nature education by the American Museum of Natural History in public schools and colleges: History and status of museum instruction and its extension to the schools of greater New York and vicinity. The Museum.
Chicago-стиль цитированияSherwood, George Herbert. Free Nature Education by the American Museum of Natural History in Public Schools and Colleges: History and Status of Museum Instruction and Its Extension to the Schools of Greater New York and Vicinity. New York: The Museum, 1920.
MLA-цитированиеSherwood, George Herbert. Free Nature Education by the American Museum of Natural History in Public Schools and Colleges: History and Status of Museum Instruction and Its Extension to the Schools of Greater New York and Vicinity. The Museum, 1920.