APA (7th ed.) Citation

Hopkins, R. S. (1969). Darwin's South America. John Day Co.

Chicago Style (17th ed.) Citation

Hopkins, Robert S. Darwin's South America. New York: John Day Co, 1969.

MLA (8th ed.) Citation

Hopkins, Robert S. Darwin's South America. John Day Co, 1969.

Warning: These citations may not always be 100% accurate.