Cita APA (7a ed.)

Leone, P. E. (1990). Understanding troubled and troubling youth Sage focus editions.

Cita Chicago Style (17a ed.)

Leone, Peter E. "Understanding Troubled and Troubling Youth." Sage Focus Editions 1990.

Cita MLA (8a ed.)

Leone, Peter E. "Understanding Troubled and Troubling Youth." Sage Focus Editions, 1990.