APA

Wiedenfeld D. A., . (2006). Aves, the Galápagos Islands. : .

Chicago

Wiedenfeld David A, . 2006. Aves, the Galápagos Islands. : .

Harvard

Wiedenfeld D. A., . (2006). Aves, the Galápagos Islands. : .

MLA

Wiedenfeld David A, . Aves, the Galápagos Islands. : . 2006.