APA (7th ed.) Citation

Sonntag, H., Pfister, H., Wunderlich, U., Holly, A., Mastaler, M., & Gander, F. (1998). Vulnerability and protective factors in early developmental stages of substance use disorders. European addiction research, 4(4), 206-207.

Chicago Style (17th ed.) Citation

Sonntag, H., H. Pfister, U. Wunderlich, A. Holly, M. Mastaler, and F. Gander. "Vulnerability and Protective Factors in Early Developmental Stages of Substance Use Disorders." European Addiction Research 4, no. 4 (1998): 206-207.

MLA (9th ed.) Citation

Sonntag, H., et al. "Vulnerability and Protective Factors in Early Developmental Stages of Substance Use Disorders." European Addiction Research, vol. 4, no. 4, 1998, pp. 206-207.