APA-čujuhus (7. p.)
Stettler, R. F. (2009). Cottonwood and the river of time: On trees, evolution, and society. University of Washington Press.
Chicago-čujuhus (17. p.)
Stettler, R. F. Cottonwood and the River of Time: On Trees, Evolution, and Society. Seattle: University of Washington Press, 2009.
MLA-čujuhus (9. p.)
Stettler, R. F. Cottonwood and the River of Time: On Trees, Evolution, and Society. University of Washington Press, 2009.
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