Marshall, A. J., & Williams, W. D. (1995). Texbook of Zoology Vertebrates (7th ed.). Laxman Chand Arya for AITBS Publishers.
Cita Chicago (17th ed.)Marshall, A. J., i W. D. Williams. Texbook of Zoology Vertebrates. 7th ed. Delhi: Laxman Chand Arya for AITBS Publishers, 1995.
Cita MLA (9th ed.)Marshall, A. J., i W. D. Williams. Texbook of Zoology Vertebrates. 7th ed. Laxman Chand Arya for AITBS Publishers, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.