Não informado. (1969). Eric news. Eric Clearinghouse on Teacher Education.
Chicagoスタイル(17版)引用形式Não informado. Eric News. Washington: Eric Clearinghouse on Teacher Education, 1969.
MLA(8版)引用形式Não informado. Eric News. Eric Clearinghouse on Teacher Education, 1969.
警告: この引用は必ずしも正確ではありません.