APA   Click to copy
Witkiewitz, K., & Vowles, K. E. (2018). Alcohol and opioid use, co-use, and chronic pain in the context of the opioid epidemic: A critical review. Alcoholism: Clinical and Experimental Research, 42, 478–488.

Chicago/Turabian   Click to copy
Witkiewitz, Katie, and Kevin E Vowles. “Alcohol and Opioid Use, Co-Use, and Chronic Pain in the Context of the Opioid Epidemic: A Critical Review.” Alcoholism: clinical and experimental research 42 (2018): 478–488.

MLA   Click to copy
Witkiewitz, Katie, and Kevin E. Vowles. “Alcohol and Opioid Use, Co-Use, and Chronic Pain in the Context of the Opioid Epidemic: A Critical Review.” Alcoholism: Clinical and Experimental Research, vol. 42, 2018, pp. 478–88.

@article{witkiewitz2018a,
  title = {Alcohol and opioid use, co-use, and chronic pain in the context of the opioid epidemic: A critical review},
  year = {2018},
  journal = {Alcoholism: clinical and experimental research},
  pages = {478--488},
  volume = {42},
  author = {Witkiewitz, Katie and Vowles, Kevin E}
}