Cita APA (7th ed.)
Stettler, R. F. (2009). Cottonwood and the river of time: On trees, evolution, and society. University of Washington Press.
Cita Chicago (17th ed.)
Stettler, R. F. Cottonwood and the River of Time: On Trees, Evolution, and Society. Seattle: University of Washington Press, 2009.
Cita MLA (9th ed.)
Stettler, R. F. Cottonwood and the River of Time: On Trees, Evolution, and Society. University of Washington Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.