Allen, J., Farrelly, M., Duke, J., Kamyab, K., Nonnemaker, J., Wylie, S., … Gourdet, C. (2018). Perceptions of the relative harmfulness of marijuana and alcohol among adults in Oregon. Preventive Medicine. https://doi.org/10.1016/j.ypmed.2018.01.001 (Original work published 2018)

Pepper, J., Lee, Y., Eggers, M., Allen, J., Thompson, J., & Nonnemaker, J. (2020). Perceptions of U.S. and Canadian Cannabis Package Warnings Among U.S. Adults. Drug and Alcohol Dependence, 217, 108275. https://doi.org/10.1016/j.drugalcdep.2020.108275 (Original work published 2020)