Watson, D. L., & Tharp, R. G. (1985). Self-directed behavior: Self-modification for personal adjustment (4th edition.). Brooks/Cole Publishing Company.
Chicago Style (17. basım) AtıfWatson, David L., ve Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. 4th edition. Monterey, California: Brooks/Cole Publishing Company, 1985.
MLA (9th ed.) AtıfWatson, David L., ve Roland G. Tharp. Self-directed Behavior: Self-modification for Personal Adjustment. 4th edition. Brooks/Cole Publishing Company, 1985.
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