APA (7th ed.) Citation

KL, P., A, U., CJ, W., & DH, E. (2001). Shaping cocaine abstinence by successive approximation. Journal of consulting and clinical psychology, 69(4), 643. https://doi.org/10.1037//0022-006x.69.4.643

Chicago Style (17th ed.) Citation

KL, Preston, Umbricht A, Wong CJ, and Epstein DH. "Shaping Cocaine Abstinence by Successive Approximation." Journal of Consulting and Clinical Psychology 69, no. 4 (2001): 643. https://doi.org/10.1037//0022-006x.69.4.643.

MLA (9th ed.) Citation

KL, Preston, et al. "Shaping Cocaine Abstinence by Successive Approximation." Journal of Consulting and Clinical Psychology, vol. 69, no. 4, 2001, p. 643, https://doi.org/10.1037//0022-006x.69.4.643.