Cita APA

Sheehan, T. J. 1., & Sheehan, M. 1. (1979). Orchid genera illustrated. New York: Van Nostrand Reinhold Company.

Citación estilo Chicago

Sheehan, Thomas John 1924-2016, y Marion 1923-1998 Sheehan. Orchid Genera Illustrated. New York: Van Nostrand Reinhold Company, 1979.

Cita MLA

Sheehan, Thomas John 1924-2016, y Marion 1923-1998 Sheehan. Orchid Genera Illustrated. New York: Van Nostrand Reinhold Company, 1979.