Cita APA

National Geographic Society. Cartographic Division, Grosvenor, G. M., & Darley, R. J. (1978). Close-up Canada, Ontario. Washington: The Division.

Citación estilo Chicago

National Geographic Society. Cartographic Division, Gilbert M. Grosvenor, y Richard J. Darley. Close-up Canada, Ontario. Washington: The Division, 1978.

Cita MLA

National Geographic Society. Cartographic Division, Gilbert M. Grosvenor, y Richard J. Darley. Close-up Canada, Ontario. Washington: The Division, 1978.