Forshaw, J. M., & Lindsey, T. (1994). Birding. Time-Life Books.
Lua i Stíl Chicago (17ú heag.)Forshaw, Joseph Michael, agus Terence Lindsey. Birding. [Alexandria, VA]: Time-Life Books, 1994.
Lua MLA (9ú heag.)Forshaw, Joseph Michael, agus Terence Lindsey. Birding. Time-Life Books, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.