Perrins, C., Cameron, A., & Hutchinson, P. (1984). Bird life: An introduction to the world of birds. Peerage.
Lua i Stíl Chicago (17ú heag.)Perrins, Christopher, Ad Cameron, agus Peter Hutchinson. Bird Life: An Introduction to the World of Birds. London: Peerage, 1984.
Lua MLA (9ú heag.)Perrins, Christopher, et al. Bird Life: An Introduction to the World of Birds. Peerage, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.