APA (7th ed.) Citation

Ossa, H. (1973). They saved our birds: The battle won and the war to win. Hippocrene Books.

Chicago Style (17th ed.) Citation

Ossa, Helen. They Saved Our Birds: The Battle Won and the War to Win. [New York]: Hippocrene Books, 1973.

MLA (9th ed.) Citation

Ossa, Helen. They Saved Our Birds: The Battle Won and the War to Win. Hippocrene Books, 1973.