APA (7th ed.) Citation

Baird, V. B., & Mathews, F. S. (1942). Wild violets of North America. University of California Press.

Chicago Style (17th ed.) Citation

Baird, Viola Brainerd, and F. Schuyler Mathews. Wild Violets of North America. Berkeley, Los Angeles: University of California Press, 1942.

MLA (9th ed.) Citation

Baird, Viola Brainerd, and F. Schuyler Mathews. Wild Violets of North America. University of California Press, 1942.