Tohutoro APA (7th ed.)
Von Hagen, V. W. (1940). Ecuador the unknown: Two and a half years' travels in the republic of Ecuador and Galápagos islands. Oxford University Press.
Tohutoru Kātū Chicago (17th ed.)
Von Hagen, Victor Wolfgang. Ecuador the Unknown: Two and a Half Years' Travels in the Republic of Ecuador and Galápagos Islands. New York: Oxford University Press, 1940.
Tohutoro MLA (9th ed.)
Von Hagen, Victor Wolfgang. Ecuador the Unknown: Two and a Half Years' Travels in the Republic of Ecuador and Galápagos Islands. Oxford University Press, 1940.
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