Prem Singh, V. A Manual of Practical Zoology Chordates.
Cita Chicago (17th ed.)Prem Singh, Verma. A Manual of Practical Zoology Chordates.
Cita MLA (9th ed.)Prem Singh, Verma. A Manual of Practical Zoology Chordates.
Atenció: Aquestes cites poden no estar 100% correctes.