Lal, S. S. (1998). A Text-Book of Practical Zoology: Vertebrate (7th ed.). Rastogi Publications.
Cita Chicago (17th ed.)Lal, S. S. A Text-Book of Practical Zoology: Vertebrate. 7th ed. India: Rastogi Publications, 1998.
Cita MLA (9th ed.)Lal, S. S. A Text-Book of Practical Zoology: Vertebrate. 7th ed. Rastogi Publications, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.