APA (7th ed.) Citation

Catholic Church & Knab, G. E. (1979). Communion services. Liturgical Press.

Chicago Style (17th ed.) Citation

Catholic Church and George E. Knab. Communion Services. Collegeville, Minn.: Liturgical Press, 1979.

MLA (8th ed.) Citation

Catholic Church and George E. Knab. Communion Services. Liturgical Press, 1979.