Não informado. (1970). Measurement in education. National Council on Measurement in Education.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Measurement in Education. Lansing, Mich: National Council on Measurement in Education, 1970.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Measurement in Education. National Council on Measurement in Education, 1970.
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