Watson, D. L., & Tharp, R. G. (1997). Self-directed behavior: Self-modification for personal adjustment (7th ed.). Brooks/Cole Publishing Company.
Cita Chicago Style (17a ed.)Watson, David L., y Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. 7th ed. Pacific Grove (CA): Brooks/Cole Publishing Company, 1997.
Cita MLA (9a ed.)Watson, David L., y Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. 7th ed. Brooks/Cole Publishing Company, 1997.
Precaución: Estas citas no son 100% exactas.