JORDAN, E. L., & VERMA, P. S. (1990). CHORDATE ZOOLOGY (10th ed.). S. Chand & Company Ltd..
Cita Chicago (17th ed.)JORDAN, E. L., i P. S. VERMA. CHORDATE ZOOLOGY. 10th ed. New Delhi: S. Chand & Company Ltd., 1990.
Cita MLA (9th ed.)JORDAN, E. L., i P. S. VERMA. CHORDATE ZOOLOGY. 10th ed. S. Chand & Company Ltd., 1990.
Atenció: Aquestes cites poden no estar 100% correctes.