Hill, C. C. (1958). Spring flowers of the lower Columbia Valley. University of Washington Press.
Cita Chicago Style (17a ed.)Hill, Clara Chapman. Spring Flowers of the Lower Columbia Valley. Seattle: University of Washington Press, 1958.
Cita MLA (8a ed.)Hill, Clara Chapman. Spring Flowers of the Lower Columbia Valley. University of Washington Press, 1958.
Precaución: Estas citas no son 100% exactas.