APA (7th ed.) Citation

Mitchell, R. S. (1968). Variation in the polygonum amphibium complex and its taxonomic significance. University of California.

Chicago Style (17th ed.) Citation

Mitchell, Richard S. Variation in the Polygonum Amphibium Complex and Its Taxonomic Significance. Berkeley: University of California, 1968.

MLA (9th ed.) Citation

Mitchell, Richard S. Variation in the Polygonum Amphibium Complex and Its Taxonomic Significance. University of California, 1968.