Brownell, C., Burke. Brian L., Kunz, C., Lundahl, B. W., & Tollefson, D. A meta-analysis of motivational interviewing: Twenty-five years of empirical studies.

Brownell, Cynthia., Burke. Brian L, Chelsea Kunz, Brad W. Lundahl, και Derrik Tollefson. A Meta-analysis of Motivational Interviewing: Twenty-five Years of Empirical Studies.

Brownell, Cynthia., et al. A Meta-analysis of Motivational Interviewing: Twenty-five Years of Empirical Studies.