Enger, E. D., Kormelink, J. R., Ross, F., & Smith, R. J. (1991). Concepts in biology (Sixth edition.). Wm. C. Brown.
Chicago Style (17th ed.) CitationEnger, Eldon D., J. Richard Kormelink, Frederick Ross, and Rodney J. Smith. Concepts in Biology. Sixth edition. Dubuque, Iowa: Wm. C. Brown, 1991.
MLA (9th ed.) CitationEnger, Eldon D., et al. Concepts in Biology. Sixth edition. Wm. C. Brown, 1991.
Warning: These citations may not always be 100% accurate.