Cite
Early risk factors for being a bully, victim, or bully/victim in late elementary and early secondary education. The longitudinal TRAILS study.
MLA
Jansen, Danielle E. M. C., et al. “Early Risk Factors for Being a Bully, Victim, or Bully/Victim in Late Elementary and Early Secondary Education. The Longitudinal TRAILS Study.” BMC Public Health, vol. 11, no. Suppl 4, Jan. 2011, pp. 440–46. EBSCOhost, https://doi.org/10.1186/1471-2458-11-440.
APA
Jansen, D. E. M. C., Veenstra, R., Ormel, J., Verhulst, F. C., & Reijneveld, S. A. (2011). Early risk factors for being a bully, victim, or bully/victim in late elementary and early secondary education. The longitudinal TRAILS study. BMC Public Health, 11(Suppl 4), 440–446. https://doi.org/10.1186/1471-2458-11-440
Chicago
Jansen, Danielle E. M. C., René Veenstra, Johan Ormel, Frank C. Verhulst, and Sijmen A. Reijneveld. 2011. “Early Risk Factors for Being a Bully, Victim, or Bully/Victim in Late Elementary and Early Secondary Education. The Longitudinal TRAILS Study.” BMC Public Health 11 (Suppl 4): 440–46. doi:10.1186/1471-2458-11-440.