Cita APA

Palmer, E. L. (1949). Fieldbook of natural history. New York: McGraw-Hill.

Citación estilo Chicago

Palmer, E. Laurence. Fieldbook of Natural History. New York: McGraw-Hill, 1949.

Cita MLA

Palmer, E. Laurence. Fieldbook of Natural History. New York: McGraw-Hill, 1949.