Não informado. (1941). Educators guide to free films. Educators Progress League.
Chicagoスタイル(17版)引用形式Não informado. Educators Guide to Free Films. Randolph, Wis: Educators Progress League, 1941.
MLA(8版)引用形式Não informado. Educators Guide to Free Films. Educators Progress League, 1941.
警告: この引用は必ずしも正確ではありません.