APA (7th ed.) Citation

Nicholas, H. G. (1950). The American Union. Penguin.

Chicago Style (17th ed.) Citation

Nicholas, H. G. The American Union. Middlesex: Penguin, 1950.

MLA (9th ed.) Citation

Nicholas, H. G. The American Union. Penguin, 1950.

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