Higgins, G. (1971). Labor Day statement, 1971. United States Catholic Conference.
Chicago Style (17th ed.) CitationHiggins, George. Labor Day Statement, 1971. Washington D.C.: United States Catholic Conference, 1971.
MLA引文Higgins, George. Labor Day Statement, 1971. United States Catholic Conference, 1971.
警告:這些引文格式不一定是100%准確.