- Editor of The Jurist
- Member of the Polish National Catholic- Roman Catholic Dialogue
- Co-editor of The Code of Canon Law: a Text and Commentary (Commissioned by the Canon Law Society of America). New York/Mahwah: Paulist Press, 1985.
- Co-editor of A New Commentary on the Code of Canon Law. New York/Mahwah: Paulist Press, 2000.
- Role of Law Award, Canon Law Society of America -- 1985
Major publications in:
- The Jurist
- Chicago Studies
- Ecumenical Trends
- The Living Light
- Revista Espanola de Derecho Canonico
- Studia Canonica