Cita APA

Williams, J. G. 1., Williams, A. E., Arlott, N. 1., & Peterson, R. T. 1. (1983). Field guide to orchids of North America: From Alaska, Greenland, and the Artic south to the Mexican border. New York: Universe Books.

Citación estilo Chicago

Williams, John George 1913-1997, Andrew E. Williams, Norman 1947-2022 Arlott, y Roger Tory 1908-1996 Peterson. Field Guide to Orchids of North America: From Alaska, Greenland, and the Artic South to the Mexican Border. New York: Universe Books, 1983.

Cita MLA

Williams, John George 1913-1997, Andrew E. Williams, Norman 1947-2022 Arlott, y Roger Tory 1908-1996 Peterson. Field Guide to Orchids of North America: From Alaska, Greenland, and the Artic South to the Mexican Border. New York: Universe Books, 1983.