National Council for the Social Studies. (1951). The teaching of contemporary affairs. s.n.
Chicagoスタイル(17版)引用形式National Council for the Social Studies. The Teaching of Contemporary Affairs. Washington, D.C: s.n, 1951.
MLA(9版)引用形式National Council for the Social Studies. The Teaching of Contemporary Affairs. s.n, 1951.
警告: この引用は必ずしも正確ではありません.