万国著作権条約
She helped draft the Universal Copyright Convention (UCC) and served as a general rapporteur for the establishment of the Rome Convention for the Protection of Performers, Producers of Phonograms and Broadcast Organizations. Ringer contributed to the 1967 Intellectual Property Conference at Stockholm that further revised the UCC and Berne Convention. Ringer also taught at the Georgetown University Law Center, where she was the university's first woman adjunct professor of law.