APA (7th ed.) Citation

Tunnicliffe, C. F. (1952). Birds of the estuary. Penguin Books.

Chicago Style (17th ed.) Citation

Tunnicliffe, C. F. Birds of the Estuary. Harmondsworth: Penguin Books, 1952.

MLA (9th ed.) Citation

Tunnicliffe, C. F. Birds of the Estuary. Penguin Books, 1952.

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