Hoffman, R. C. (1936). The romance of commerce. Little, Brown, and company.
Chicagoスタイル(17版)引用形式Hoffman, Ruth Christine. The Romance of Commerce. Boston: Little, Brown, and company, 1936.
MLA(8版)引用形式Hoffman, Ruth Christine. The Romance of Commerce. Little, Brown, and company, 1936.
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