APA (7e ed.) Bronvermelding

Kotpal, R. L. (1999). The Birds: A Text Book for University Students (4th ed.). Rastogi Publications.

Chicago (17e ed.) Bronvermelding

Kotpal, R. L. The Birds: A Text Book for University Students. 4th ed. Meerut, India: Rastogi Publications, 1999.

MLA (9e ed.) Bronvermelding

Kotpal, R. L. The Birds: A Text Book for University Students. 4th ed. Rastogi Publications, 1999.