APA (7th ed.) Citation

Pennell, S., & Curtis, C. (1993). Comparison of Drug Control Strategies in San Diego, 1989. [Verlag nicht ermittelbar]. https://doi.org/10.3886/ICPSR09990.v2

Chicago Style (17th ed.) Citation

Pennell, Susan, and Christine Curtis. Comparison of Drug Control Strategies in San Diego, 1989. [Erscheinungsort nicht ermittelbar]: [Verlag nicht ermittelbar], 1993. https://doi.org/10.3886/ICPSR09990.v2.

MLA (9th ed.) Citation

Pennell, Susan, and Christine Curtis. Comparison of Drug Control Strategies in San Diego, 1989. [Verlag nicht ermittelbar], 1993. https://doi.org/10.3886/ICPSR09990.v2.