APA Citation
Torgersen, S., Czajkowski, N., Jacobson, K., Reichborn-Kjennerud, T., Røysamb, E., Neale, M., & Kendler, K. (2008). Dimensional Representations of DSM-IV Cluster B Personality Disorders in a Population-Based Sample of Norwegian Twins: A Multivariate Study. *Psychological Medicine*, 38(11), 1617-1625.