Não informado. (1937). The Science teacher. American Science Teachers Association.
Chicagoスタイル(17版)引用形式Não informado. The Science Teacher. Normal, Ill: American Science Teachers Association, 1937.
MLA(8版)引用形式Não informado. The Science Teacher. American Science Teachers Association, 1937.
警告: この引用は必ずしも正確ではありません.