Παραπομπή σε μορφή APA (7η εκδ.)

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 Unpublished letters.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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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 Unpublished Letters.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.

Παραπομπή σε μορφή MLA (8th εκδ.)

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 Unpublished Letters.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.