Cita APA (7th ed.)

Nicholls, H. (2014). The Galápagos: A natural history. Basic Books.

Cita Chicago (17th ed.)

Nicholls, Henry. The Galápagos: A Natural History. New York: Basic Books, 2014.

Cita MLA (9th ed.)

Nicholls, Henry. The Galápagos: A Natural History. Basic Books, 2014.