Não informado. (1928). Journal of Education for Business. Heldref Publications.
Chicagoスタイル(17版)引用形式Não informado. Journal of Education for Business. Washington: Heldref Publications, 1928.
MLA(8版)引用形式Não informado. Journal of Education for Business. Heldref Publications, 1928.
警告: この引用は必ずしも正確ではありません.