Não informado. (1968). Journal of Educational Measurement. National Council on Measurement in Education.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Educational Measurement. Washington: National Council on Measurement in Education, 1968.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Educational Measurement. National Council on Measurement in Education, 1968.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.