Cita APA (7a ed.)

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.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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.