Higgins, G. G. (1979). Labor Day Statement, 1979. Washington, D.C..
Chicagoスタイル(17版)引用形式Higgins, George G. Labor Day Statement, 1979. Washington, D.C., 1979.
MLA(8版)引用形式Higgins, George G. Labor Day Statement, 1979. Washington, D.C., 1979.
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