Watson, D. L. (1985). Self-directed behavior: Self modification for personal adjustments (4th ed.). Brooks/ Cole.
Tohutoru Kātū Chicago (17th ed.)Watson, David L. Self-directed Behavior: Self Modification for Personal Adjustments. 4th ed. Monterey, California: Brooks/ Cole, 1985.
Tohutoro MLA (9th ed.)Watson, David L. Self-directed Behavior: Self Modification for Personal Adjustments. 4th ed. Brooks/ Cole, 1985.
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