Cita APA (7a ed.)

Katzer, C. (2009). Cyberbullying in Germany: What has been done and what is going on. Zeitschrift für Psychologie, 217(4), 222-223. doi:10.1027/0044-3409.217.4.222

Cita Chicago Style (17a ed.)

Katzer, Catarina. "Cyberbullying in Germany: What Has Been Done and What Is Going on." Zeitschrift Für Psychologie 217, no. 4 (2009): 222-223. https://doi.org/10.1027/0044-3409.217.4.222.

Cita MLA (9a ed.)

Katzer, Catarina. "Cyberbullying in Germany: What Has Been Done and What Is Going on." Zeitschrift Für Psychologie, vol. 217, no. 4, 2009, pp. 222-223, https://doi.org/10.1027/0044-3409.217.4.222.