David V. Perkins

5 books

Jan 5, 2021
Cover of The Power of Self-Discipline

The Power of Self-Discipline

Dec 5, 2020
Cover of Effective Communication

Effective Communication

Dec 2, 2020
Cover of Mental Toughness

Mental Toughness

Jan 27, 2000
Cover of Case Analyses for Abnormal Psychology

Case Analyses for Abnormal Psychology

Apr 30, 1987
Cover of Principles of Community Psychology

Principles of Community Psychology