Nuffield Foundation. Science Teaching Project. (1966). Nuffield biology: Introducing living things. Nuffield Foundation.
Lua i Stíl Chicago (17ú heag.)Nuffield Foundation. Science Teaching Project. Nuffield Biology: Introducing Living Things. London: Nuffield Foundation, 1966.
Lua MLA (9ú heag.)Nuffield Foundation. Science Teaching Project. Nuffield Biology: Introducing Living Things. Nuffield Foundation, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.