(1981). Employment and conditions of work of teachers. International Labour Office.
Chicagoスタイル(17版)引用形式Employment and Conditions of Work of Teachers. Geneva: International Labour Office, 1981.
MLA(9版)引用形式Employment and Conditions of Work of Teachers. International Labour Office, 1981.
警告: この引用は必ずしも正確ではありません.