Von Hagen, V. W. (1955). South America called them: Explorations of the great naturalists: La Condamine, Humboldt, Darwin, Spruce. Duell, Sloan and Pearce.
Chicago Style (17th ed.) CitationVon Hagen, Victor Wolfgang. South America Called Them: Explorations of the Great Naturalists: La Condamine, Humboldt, Darwin, Spruce. New York: Duell, Sloan and Pearce, 1955.
MLA (9th ed.) CitationVon Hagen, Victor Wolfgang. South America Called Them: Explorations of the Great Naturalists: La Condamine, Humboldt, Darwin, Spruce. Duell, Sloan and Pearce, 1955.
Warning: These citations may not always be 100% accurate.