Higgins, S. T., Rush, C. R., Hughes, J. R., Bickel, W. K., Lynn, M., & Capeless, M. A. (1992). Effects of cocaine and alcohol, alone and in combination, on human learning and performance.

Higgins, S T., C R. Rush, J R. Hughes, W K. Bickel, M. Lynn, και M A. Capeless. Effects of Cocaine and Alcohol, Alone and in Combination, On Human Learning and Performance. 1992.

Higgins, S T., et al. Effects of Cocaine and Alcohol, Alone and in Combination, On Human Learning and Performance. 1992.