APA-viite (7. p.)
ebrary, Inc, Spies, T. A., & Duncan, S. L. (2009). Old growth in a New World: A Pacific Northwest icon reexamined. Island Press.
Chicago-viite (17. p.)
ebrary, Inc, Thomas A. Spies, ja Sally L. Duncan. Old Growth in a New World: A Pacific Northwest Icon Reexamined. Washington, D.C.: Island Press, 2009.
MLA-viite (9. p.)
ebrary, Inc, et al. Old Growth in a New World: A Pacific Northwest Icon Reexamined. Island Press, 2009.
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