Não informado. (1968). Journal of Educational Measurement. National Council on Measurement in Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Educational Measurement. Washington: National Council on Measurement in Education, 1968.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Educational Measurement. National Council on Measurement in Education, 1968.
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