APA
Tibbitts J. C., National Bureau of Economic Research & Cowan B. W. (2021). The Opioid safety initiative and veteran suicides. Cambridge: NBER.
Chicago
Tibbitts Joshua C, National Bureau of Economic Research and Cowan Benjamin W. 2021. The Opioid safety initiative and veteran suicides. Cambridge: NBER.
Harvard
Tibbitts J. C., National Bureau of Economic Research and Cowan B. W. (2021). The Opioid safety initiative and veteran suicides. Cambridge: NBER.
MLA
Tibbitts Joshua C, National Bureau of Economic Research and Cowan Benjamin W. The Opioid safety initiative and veteran suicides. Cambridge: NBER. 2021.