Cita APA (7a ed.)
Heusser, C. J. (1971). Pollen and spores of chile. University of Arizona.
Cita estilo Chicago (17a ed.)
Heusser, Calvin J. Pollen and Spores of Chile. Tucson, EUA: University of Arizona, 1971.
Cita MLA (9a ed.)
Heusser, Calvin J. Pollen and Spores of Chile. University of Arizona, 1971.
Precaución: Estas citas no son 100% exactas.