Hodge, J., & Radick, G. (2006). The Cambridge Companion to Darwin: Ed. by Jonathan Hodge and Gregory Radick. Cambridge Univ. Press.
Lua i Stíl Chicago (17ú heag.)Hodge, Johathan, agus Gregory Radick. The Cambridge Companion to Darwin: Ed. by Jonathan Hodge and Gregory Radick. Cambridge [u.a.]: Cambridge Univ. Press, 2006.
Lua MLA (8ú heag.)Hodge, Johathan, agus Gregory Radick. The Cambridge Companion to Darwin: Ed. by Jonathan Hodge and Gregory Radick. Cambridge Univ. Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.