APA (7th ed.) Citation

Debono, E. (1977). The happiness purpose. Penguin.

Chicago Style (17th ed.) Citation

Debono, Edward. The Happiness Purpose. England: Penguin, 1977.

MLA (9th ed.) Citation

Debono, Edward. The Happiness Purpose. Penguin, 1977.

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