Não informado. (1958). Educational Research. National Foundation for Educational Research.
Chicagoスタイル(17版)引用形式Não informado. Educational Research. Oxfordshire, Inglaterra: National Foundation for Educational Research, 1958.
MLA(8版)引用形式Não informado. Educational Research. National Foundation for Educational Research, 1958.
警告: この引用は必ずしも正確ではありません.