APA (7th ed.) Citation

Kotagama, S. Pictorial Pocket Guide to the Common Birds of Sri Lanka: Revised & Expanded. Field Ornithology Group Of Sri Lanka.

Chicago Style (17th ed.) Citation

Kotagama, Sarath. Pictorial Pocket Guide to the Common Birds of Sri Lanka: Revised & Expanded. Colombo: Field Ornithology Group Of Sri Lanka.

MLA (9th ed.) Citation

Kotagama, Sarath. Pictorial Pocket Guide to the Common Birds of Sri Lanka: Revised & Expanded. Field Ornithology Group Of Sri Lanka.

Warning: These citations may not always be 100% accurate.