Παραπομπή APA

Eldon D. Enger & Frederick C. Ross. (2003). Concepts in Biology (3rd ed.). Tata McGraw- Hill Publishing Company Limited.

Παραπομπή Chicago Style

Eldon D. Enger και Frederick C. Ross. Concepts in Biology. 3rd ed. New Delhi: Tata McGraw- Hill Publishing Company Limited, 2003.

Παραπομπή MLA

Eldon D. Enger και Frederick C. Ross. Concepts in Biology. 3rd ed. Tata McGraw- Hill Publishing Company Limited, 2003.