APA (7th ed.) Citation

Penguin Books. (1945). Ten Years of Penguins: 1935-1945. Penguin Books.

Chicago Style (17th ed.) Citation

Penguin Books. Ten Years of Penguins: 1935-1945. Harmondsworth [u.a.]: Penguin Books, 1945.

MLA (8th ed.) Citation

Penguin Books. Ten Years of Penguins: 1935-1945. Penguin Books, 1945.