Bowman, R. I. The Galápagos. Proceedings of the symposia of the Galápagos internacional scientific project.
Lua i Stíl Chicago (17ú heag.)Bowman, Robert I. The Galápagos. Proceedings of the Symposia of the Galápagos Internacional Scientific Project.
Lua MLA (8ú heag.)Bowman, Robert I. The Galápagos. Proceedings of the Symposia of the Galápagos Internacional Scientific Project.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.