APA (7th ed.) Citation

The 20 British prime ministers of the 20th century. Haus.

Chicago Style (17th ed.) Citation

The 20 British Prime Ministers of the 20th Century. London: Haus.

MLA (9th ed.) Citation

The 20 British Prime Ministers of the 20th Century. Haus.

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