Cita APA (7th ed.)

Watson, D. L., & Tharp, R. G. (1993). Self-directed behavior: Self-modification for personal adjustment (6th ed.). Brooks/Cole.

Cita Chicago (17th ed.)

Watson, David L., i Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. 6th ed. Pacific Grove, Calif: Brooks/Cole, 1993.

Cita MLA (9th ed.)

Watson, David L., i Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. 6th ed. Brooks/Cole, 1993.