Cita APA (7a ed.)

Gradinger, P., Strohmeier, D., & Spielmann, C. (2009). Traditional bullying and cyberbullying: Identification of risk groups for adjustment problems. Zeitschrift für Psychologie, 217(4), 205-213. doi:10.1027/0044-3409.217.4.205

Cita Chicago Style (17a ed.)

Gradinger, Petra, Dagmar Strohmeier, y Christiane Spielmann. "Traditional Bullying and Cyberbullying: Identification of Risk Groups for Adjustment Problems." Zeitschrift Für Psychologie 217, no. 4 (2009): 205-213. https://doi.org/10.1027/0044-3409.217.4.205.

Cita MLA (9a ed.)

Gradinger, Petra, et al. "Traditional Bullying and Cyberbullying: Identification of Risk Groups for Adjustment Problems." Zeitschrift Für Psychologie, vol. 217, no. 4, 2009, pp. 205-213, https://doi.org/10.1027/0044-3409.217.4.205.