APA

Horwell D., Oxford P., . (1999). Galápagos wildlife. Chalfont St. Peter, UK: Bradt Publications.

Chicago

Horwell David, Oxford Pete, . 1999. Galápagos wildlife. Chalfont St. Peter, UK: Bradt Publications.

Harvard

Horwell D., Oxford P., . (1999). Galápagos wildlife. Chalfont St. Peter, UK: Bradt Publications.

MLA

Horwell David, Oxford Pete, . Galápagos wildlife. Chalfont St. Peter, UK: Bradt Publications. 1999.