Cita APA

Hitchcock, C. L. n. 1., & Hitchcock, C. L. n. 1. (1955). Vascular plants of the Pacific North-west. Seattle: University of Washington Press.

Citación estilo Chicago

Hitchcock, Charles Leo n. 1902, y Charles Leo n. 1902 Hitchcock. Vascular Plants of the Pacific North-west. Seattle: University of Washington Press, 1955.

Cita MLA

Hitchcock, Charles Leo n. 1902, y Charles Leo n. 1902 Hitchcock. Vascular Plants of the Pacific North-west. Seattle: University of Washington Press, 1955.