MACKEAN, D. (1973). Introduction To Biology. John Murray.
Lua i Stíl Chicago (17ú heag.)MACKEAN, D.G. Introduction To Biology. John Murray, 1973.
Lua MLA (8ú heag.)MACKEAN, D.G. Introduction To Biology. John Murray, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.