Hartmann, M., & Petzoldt, D. (1995). Observational analysis of German injecting drug users: Survival with and without methadone maintenance treatment. European journal of medical research, 1, .
Chicago-Zitierstil (17. Ausg.)Hartmann, Martin, und Detlef Petzoldt. "Observational Analysis of German Injecting Drug Users: Survival with and Without Methadone Maintenance Treatment." European Journal of Medical Research 1 (1995).
MLA-Zitierstil (9. Ausg.)Hartmann, Martin, und Detlef Petzoldt. "Observational Analysis of German Injecting Drug Users: Survival with and Without Methadone Maintenance Treatment." European Journal of Medical Research, vol. 1, 1995.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.