APA (7th ed.) Citation

Lenz, F. (1992). Personal happiness The enlightenment cycle..

Chicago Style (17th ed.) Citation

Lenz, Frederick. "Personal Happiness." The Enlightenment Cycle. 1992.

MLA (8th ed.) Citation

Lenz, Frederick. "Personal Happiness." The Enlightenment Cycle., 1992.

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