K. P. Heffner

Change the Name and You Change the Game

J. S. Efran, K. P. Heffner, 2016 .

Language, Natural Drift, and Therapeutic Practice

J. S. Efran, E. Aldarondo, K. P. Heffner, 1997 .

Is constructivist psychotherapy epistemologically flawed

J. S. Efran, K. P. Heffner, 1998 .

Recreational drug use concurrent with abuse or dependence on other psychoactive substances.

N. Rothrock, H. Rosenberg, K. P. Heffner, 1996, Journal of substance abuse treatment.