Higgins, G. (1971). Labor Day statement, 1971. United States Catholic Conference.
Cita Chicago Style (17a ed.)Higgins, George. Labor Day Statement, 1971. Washington D.C.: United States Catholic Conference, 1971.
Cita MLA (8a ed.)Higgins, George. Labor Day Statement, 1971. United States Catholic Conference, 1971.
Precaución: Estas citas no son 100% exactas.