Cita APA (7a ed.)

Watson, D. L., & Tharp, R. G. (2007). Self-directed behavior: Self-modification for personal adjustment (9th ed.). Thomson Learning.

Cita Chicago Style (17a ed.)

Watson, David L., y Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. 9th ed. Belmont, CA: Thomson Learning, 2007.

Cita MLA (8a ed.)

Watson, David L., y Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. 9th ed. Thomson Learning, 2007.