Jenkins, A. C. (1978). The naturalists: Pioneers of natural history. Hamish Hamilton.
Lua i Stíl Chicago (17ú heag.)Jenkins, Alan C. The Naturalists: Pioneers of Natural History. London: Hamish Hamilton, 1978.
Lua MLA (8ú heag.)Jenkins, Alan C. The Naturalists: Pioneers of Natural History. Hamish Hamilton, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.