Douglas, D., & Davies, J. (1980). Douglas of the forests: The North American journals of David Douglas. University of Washington Press.
Cita Chicago Style (17a ed.)Douglas, David, y John Davies. Douglas of the Forests: The North American Journals of David Douglas. Seattle: University of Washington Press, 1980.
Cita MLA (8a ed.)Douglas, David, y John Davies. Douglas of the Forests: The North American Journals of David Douglas. University of Washington Press, 1980.
Precaución: Estas citas no son 100% exactas.