APA (7th ed.) Citation

Fisher, J. (1947). Bird recognition / by J. Fisher. Penguin Books.

Chicago Style (17th ed.) Citation

Fisher, J. Bird Recognition / by J. Fisher. Penguin Books, 1947.

MLA (9th ed.) Citation

Fisher, J. Bird Recognition / by J. Fisher. Penguin Books, 1947.

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