Cita APA (7a ed.)

Spellenberg, R., Hughes, A. K., More, D., Nelson, G., & Earle, C. J. (2014). Trees of Western North America. Princeton University Press.

Cita Chicago Style (17a ed.)

Spellenberg, Richard, Amy K. Hughes, David More, Gil Nelson, y Christopher J. Earle. Trees of Western North America. Princeton: Princeton University Press, 2014.

Cita MLA (8a ed.)

Spellenberg, Richard, et al. Trees of Western North America. Princeton University Press, 2014.