APA (7th ed.) Citation

Heusser, C. J. (1971). Pollen and spores of Chile: Modern types of the Pteridophyta, Gymnospermae, and Angiospermae. University of Arizona Press.

Chicago Style (17th ed.) Citation

Heusser, Calvin J. Pollen and Spores of Chile: Modern Types of the Pteridophyta, Gymnospermae, and Angiospermae. Tucson: University of Arizona Press, 1971.

MLA (9th ed.) Citation

Heusser, Calvin J. Pollen and Spores of Chile: Modern Types of the Pteridophyta, Gymnospermae, and Angiospermae. University of Arizona Press, 1971.