Cita APA (7a ed.)
Darwin, C., & Huxley, J. The Origins of Species: By Means of Natural Selection or The Preservation of Favoured Races in the Struggle for Life (4a impresión.). New American Library.
Cita estilo Chicago (17a ed.)
Darwin, Charles, y Julian Huxley. The Origins of Species: By Means of Natural Selection or The Preservation of Favoured Races in the Struggle for Life. 4a impresión. Nueva York, EUA: New American Library.
Cita MLA (9a ed.)
Darwin, Charles, y Julian Huxley. The Origins of Species: By Means of Natural Selection or The Preservation of Favoured Races in the Struggle for Life. 4a impresión. New American Library.
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