APA (7th ed.) Citation

Hatfield, H. S. (1948). The inventor and his world. Penguin.

Chicago Style (17th ed.) Citation

Hatfield, Henry S. The Inventor and His World. West Drayton, England: Penguin, 1948.

MLA (8th ed.) Citation

Hatfield, Henry S. The Inventor and His World. Penguin, 1948.