Higgins, G. (1971). Labor Day statement, 1971. United States Catholic Conference.
Chicagoスタイル(17版)引用形式Higgins, George. Labor Day Statement, 1971. Washington D.C.: United States Catholic Conference, 1971.
MLA(8版)引用形式Higgins, George. Labor Day Statement, 1971. United States Catholic Conference, 1971.
警告: この引用は必ずしも正確ではありません.