APA (7th ed.) Citation

Banks, J., & Banks, R. C. I. (1980). A selection of the birds of Sri Lanka. John and Judy Banks.

Chicago Style (17th ed.) Citation

Banks, Judy, and R. C. I'Anson Banks. A Selection of the Birds of Sri Lanka. London: John and Judy Banks, 1980.

MLA (9th ed.) Citation

Banks, Judy, and R. C. I'Anson Banks. A Selection of the Birds of Sri Lanka. John and Judy Banks, 1980.