Watson, D. L., & Tharp, R. G. (2014). Self-directed behavior: Self-modification for personal adjustment (Tenth edition.). Wadswoth.
Cita Chicago (17th ed.)Watson, David L., i Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. Tenth edition. Australia: Wadswoth, 2014.
Cita MLA (9th ed.)Watson, David L., i Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. Tenth edition. Wadswoth, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.