APA (7th ed.) Citation

Verthein, U., Raschke, P., & Kalke, J. (1995). Methadone therapy in Hamburg. European addiction research, 1(3), 99-105.

Chicago Style (17th ed.) Citation

Verthein, U., P. Raschke, and J. Kalke. "Methadone Therapy in Hamburg." European Addiction Research 1, no. 3 (1995): 99-105.

MLA (8th ed.) Citation

Verthein, U., et al. "Methadone Therapy in Hamburg." European Addiction Research, vol. 1, no. 3, 1995, pp. 99-105.