Citazione Stile APA (7a Edizione)

Grimmet,Richard. (1999). Birds of the Indian Subcontinent: Helm Field Guides. Oxford University.

Citazione stile Chigago Style (17a edizione)

Grimmet,Richard. Birds of the Indian Subcontinent: Helm Field Guides. London: Oxford University, 1999.

Citatione MLA (9a ed.)

Grimmet,Richard. Birds of the Indian Subcontinent: Helm Field Guides. Oxford University, 1999.