CECCO JOHN P; CRAWFORD WILLIAM. (1988). PSYCHOLOGY OF LEARNING AND INSTRUCTION: EDUCATIONAL PSYCHOLOGY (2.). PRENTICE -HALL INTERNATIONAL, INC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCECCO JOHN P; CRAWFORD WILLIAM. PSYCHOLOGY OF LEARNING AND INSTRUCTION: EDUCATIONAL PSYCHOLOGY. 2. NEW DLEHI: PRENTICE -HALL INTERNATIONAL, INC, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCECCO JOHN P; CRAWFORD WILLIAM. PSYCHOLOGY OF LEARNING AND INSTRUCTION: EDUCATIONAL PSYCHOLOGY. 2. PRENTICE -HALL INTERNATIONAL, INC, 1988.
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