APA (7th ed.) Citation

Opton, E. M., & Lazarus, R. S. (1967). Personality. Penguin Books.

Chicago Style (17th ed.) Citation

Opton, Edward M., and Richard S. Lazarus. Personality. Harmondsworth: Penguin Books, 1967.

MLA (8th ed.) Citation

Opton, Edward M., and Richard S. Lazarus. Personality. Penguin Books, 1967.

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