APA (7e ed.) Bronvermelding

Abrams, L. R., & Ferris, R. S. (1923). An illustrated flora of the Pacific States: Washington, Oregon, and California. Stanford University Press.

Chicago (17e ed.) Bronvermelding

Abrams, Le Roy, en Roxana S. Ferris. An Illustrated Flora of the Pacific States: Washington, Oregon, and California. Stanford University: Stanford University Press, 1923.

MLA (8e ed.) Bronvermelding

Abrams, Le Roy, en Roxana S. Ferris. An Illustrated Flora of the Pacific States: Washington, Oregon, and California. Stanford University Press, 1923.