Grimmet,Richard. (1999). Birds of the Indian Subcontinent: Helm Field Guides. Oxford University.
Cita Chicago (17th ed.)Grimmet,Richard. Birds of the Indian Subcontinent: Helm Field Guides. London: Oxford University, 1999.
Cita MLA (9th ed.)Grimmet,Richard. Birds of the Indian Subcontinent: Helm Field Guides. Oxford University, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.