Enger, E. D., Ross, F. C., & Bailey, D. B. (2012). Concepts in biology (14th edition.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Enger, Eldon D., Frederick C. Ross, agus David B. Bailey. Concepts in Biology. 14th edition. New York: McGraw-Hill, 2012.
Lua MLA (9ú heag.)Enger, Eldon D., et al. Concepts in Biology. 14th edition. McGraw-Hill, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.