Cita APA (7th ed.)

Grewal, B. (2016). A Photographic Field Guide to the Birds of India,: Pakistan, Nepal, Bhutan, Sri Lanka, and Bangladesh. Princeton University Press.

Cita Chicago (17th ed.)

Grewal, Bikram. A Photographic Field Guide to the Birds of India,: Pakistan, Nepal, Bhutan, Sri Lanka, and Bangladesh. New Jersey: Princeton University Press, 2016.

Cita MLA (9th ed.)

Grewal, Bikram. A Photographic Field Guide to the Birds of India,: Pakistan, Nepal, Bhutan, Sri Lanka, and Bangladesh. Princeton University Press, 2016.