Sprinthall, N. A., & Sprinthall, R. C. (1990). Educational Psychology: A Developmental Approach. Singapore: McGraw-Hill.
Παραπομπή Chicago StyleSprinthall, Norman A., και Richard C. Sprinthall. Educational Psychology: A Developmental Approach. Singapore: McGraw-Hill, 1990.
Παραπομπή MLASprinthall, Norman A., και Richard C. Sprinthall. Educational Psychology: A Developmental Approach. Singapore: McGraw-Hill, 1990.
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