Heiss, E. D., & Lape, R. H. (1958). Biology, a basic science. Van Nostrand.
Lua i Stíl Chicago (17ú heag.)Heiss, Elwood D., agus Richard H. Lape. Biology, a Basic Science. New York: Van Nostrand, 1958.
Lua MLA (8ú heag.)Heiss, Elwood D., agus Richard H. Lape. Biology, a Basic Science. Van Nostrand, 1958.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.