APA Citation

Willey, G. R. 1., & Willey, G. R. 1. South America.

Chicago Style Citation

Willey, Gordon Randolph 1913-2002, and Gordon Randolph 1913-2002 Willey. South America.

MLA Citation

Willey, Gordon Randolph 1913-2002, and Gordon Randolph 1913-2002 Willey. South America.

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