Salim Ali & Ripley, S. D. (2001). Handbook of the birds of India and Pakistan together with those of Bengladesh, Nepal, Bhutan, and Sri Lanka; vol.9: Robins and Wagtails (2nd ed.). Oxford University Press.

Salim Ali and S. Dhillon Ripley. Handbook of the Birds of India and Pakistan Together with Those of Bengladesh, Nepal, Bhutan, and Sri Lanka; Vol.9: Robins and Wagtails. 2nd ed. New Delhi: Oxford University Press, 2001.

Salim Ali and S. Dhillon Ripley. Handbook of the Birds of India and Pakistan Together with Those of Bengladesh, Nepal, Bhutan, and Sri Lanka; Vol.9: Robins and Wagtails. 2nd ed. Oxford University Press, 2001.