Philadelphia, A. C. H. S. o. Certificate of Membership, American Catholic Historical Society of Philadelphia, [n.d.].
Chicago-viite (17. p.)Philadelphia, American Catholic Historical Society of. Certificate of Membership, American Catholic Historical Society of Philadelphia, [n.d.].
MLA-viite (8. p.)Philadelphia, American Catholic Historical Society of. Certificate of Membership, American Catholic Historical Society of Philadelphia, [n.d.].
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