Cita APA (7a ed.)

Fröhlich-Gildhoff, K., & Engel, E. (2008). Professional support for violent young people: Results of a comparative European study. Beiträge zur Kinder- und Jugendforschung.

Cita Chicago Style (17a ed.)

Fröhlich-Gildhoff, Klaus, y Eva-Maria Engel. "Professional Support for Violent Young People: Results of a Comparative European Study." Beiträge Zur Kinder- Und Jugendforschung 2008.

Cita MLA (9a ed.)

Fröhlich-Gildhoff, Klaus, y Eva-Maria Engel. "Professional Support for Violent Young People: Results of a Comparative European Study." Beiträge Zur Kinder- Und Jugendforschung, 2008.