Eldon D. Enger & Frederick C. Ross. (2003). Concepts in Biology (3rd ed.). Tata McGraw- Hill Publishing Company Limited.
Chicago Edition CitationEldon D. Enger i Frederick C. Ross. Concepts in Biology. 3rd ed. New Delhi: Tata McGraw- Hill Publishing Company Limited, 2003.
Cita MLAEldon D. Enger i Frederick C. Ross. Concepts in Biology. 3rd ed. Tata McGraw- Hill Publishing Company Limited, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.