APA (7th ed.) Citation

Bartholomew, J. (1989). The Richest man in the world: The Sultan of Brunei. Penguin Book.

Chicago Style (17th ed.) Citation

Bartholomew, James. The Richest Man in the World: The Sultan of Brunei. England: Penguin Book, 1989.

MLA (9th ed.) Citation

Bartholomew, James. The Richest Man in the World: The Sultan of Brunei. Penguin Book, 1989.