APA (7th ed.) Citation
Nielsen, S., & et al. (2011). Pharmaceutical opioid analgesic and heroin dependence: How do treatment-seeking clients differ in Australia?
Chicago Style (17th ed.) Citation
Nielsen, S., and et al. Pharmaceutical Opioid Analgesic and Heroin Dependence: How Do Treatment-seeking Clients Differ in Australia? 2011.
MLA (9th ed.) Citation
Nielsen, S., and et al. Pharmaceutical Opioid Analgesic and Heroin Dependence: How Do Treatment-seeking Clients Differ in Australia? 2011.
Warning: These citations may not always be 100% accurate.