APA (7th ed.) Citation

Kirkwood, J. E. (1930). Northern Rocky Mountain trees and shrubs. Stanford University Press.

Chicago Style (17th ed.) Citation

Kirkwood, J. E. Northern Rocky Mountain Trees and Shrubs. Stanford University, Calif.: Stanford University Press, 1930.

MLA (8th ed.) Citation

Kirkwood, J. E. Northern Rocky Mountain Trees and Shrubs. Stanford University Press, 1930.

Warning: These citations may not always be 100% accurate.