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 Unpublished letters.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-viite (17. p.)Clipper, 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 Unpublished Letters.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-viite (8. p.)Clipper, 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 Unpublished Letters.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.
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