Spellenberg, R., Earle, C. J., Nelson, G., More, D., & Hughes, A. K. (2014). Trees of Western North America. Princeton University Press.
Chicagoスタイル(17版)引用形式Spellenberg, Richard, Christopher J. Earle, Gil Nelson, David More, , Amy K. Hughes. Trees of Western North America. Princeton, New Jersey: Princeton University Press, 2014.
MLA(9版)引用形式Spellenberg, Richard, et al. Trees of Western North America. Princeton University Press, 2014.
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