APA (7th ed.) Citation

Banks, J., & Banks, P. N. (1980). A selection of the birds of Sri Lanka. Lake House Investments.

Chicago Style (17th ed.) Citation

Banks, Judy, and P. N. Banks. A Selection of the Birds of Sri Lanka. Colombo: Lake House Investments, 1980.

MLA (9th ed.) Citation

Banks, Judy, and P. N. Banks. A Selection of the Birds of Sri Lanka. Lake House Investments, 1980.