Clipper, J. (1900). Unpublished letters. John Clipper to Rev. S. S. Cooper. Records of the American Catholic Historical Society of Philadelphia. Volume XI. Pages 70-71. Philadelphia : American Catholic Historical Society of Philadelphia.
Chicago (17e ed.) BronvermeldingClipper, John. Unpublished Letters. John Clipper to Rev. S. S. Cooper. Records of the American Catholic Historical Society of Philadelphia. Volume XI. Pages 70-71. Philadelphia : American Catholic Historical Society of Philadelphia, 1900.
MLA (8e ed.) BronvermeldingClipper, John. Unpublished Letters. John Clipper to Rev. S. S. Cooper. Records of the American Catholic Historical Society of Philadelphia. Volume XI. Pages 70-71. Philadelphia : American Catholic Historical Society of Philadelphia, 1900.
Let op: Deze citaties zijn niet altijd 100% accuraat.