Cassidy, R. N., Tidey, J. W., Colby, S. M., Long, V., & Higgins, S. T. (2017). Initial Development of an E-cigarette Purchase Task: A Mixed Methods Study. Tob Regul Sci.

Cassidy, Rachel N., Jennifer W. Tidey, Suzanne M. Colby, Victoria Long, and Stephen T. Higgins. "Initial Development of an E-cigarette Purchase Task: A Mixed Methods Study." Tob Regul Sci 2017.

Cassidy, Rachel N., et al. "Initial Development of an E-cigarette Purchase Task: A Mixed Methods Study." Tob Regul Sci 2017.