1. Ali, S. and Ripley, S. D. (1968). Handbook of the Birds of Indian and Pakistan together with those of Bangladesh, Nepal, Bhutan and Sri Lanka. Compact Edition. Oxford University Press, UK. 320 pp.
2. Ali, S. and Ripley, S. D. (1978). Handbook of the Birds of Indian and Pakistan together with those of Bangladesh, Nepal, Bhutan and Sri Lanka. Second Edition. Oxford University Press, UK. 481 pp.
3. Arroyo, B., Ferreiro, E. and Garza, V. (1990). II Censo Nacional de Buitre Leonado (Gyps fulvus): población, distribución, demografía y conservación, Madrid: ICONA, D.L. 1: 91-92.
4. Baker ECS (1935). The nidification of the birds of the Indian Empire. Volume 4. Taylor and Francis, London, UK. 546 pp.
5. Baral, N., Goutam, R. and Tamang, B. (2005). Population status and breeding ecology of White-rumped Vulture Gyps bengalensis in Rampur Valley, Nepal. Forktail, 21: 87-91.