Worley, M., Gallop, R., Gibbons, M. B. C., Ring-Kurtz, S., Present, J., Weiss, R. D., & Crits-Christoph, P. (2008). Additional Treatment Services in a Cocaine Treatment Study: Level of Services Obtained and Impact on Outcome.

Worley, Matthew, Robert Gallop, Mary Beth Connolly Gibbons, Sarah Ring-Kurtz, Julie Present, Roger D. Weiss, and Paul Crits-Christoph. Additional Treatment Services in a Cocaine Treatment Study: Level of Services Obtained and Impact On Outcome. 2008.

Worley, Matthew, et al. Additional Treatment Services in a Cocaine Treatment Study: Level of Services Obtained and Impact On Outcome. 2008.