Tohutoro APA (7th ed.)

Oxford, P., & Watkins, G. (2009). Galapagos: Both sides of the coin (1a. ed.). Enfoque Ediciones.

Tohutoru Kātū Chicago (17th ed.)

Oxford, Pete, me Graham Watkins. Galapagos: Both Sides of the Coin. 1a. ed. Quito: Enfoque Ediciones, 2009.

Tohutoro MLA (9th ed.)

Oxford, Pete, me Graham Watkins. Galapagos: Both Sides of the Coin. 1a. ed. Enfoque Ediciones, 2009.