APA
Sheerin J. B., . (1967). A practical guide to ecumenism. New York: Paulist Press.
Chicago
Sheerin John B, . 1967. A practical guide to ecumenism. New York: Paulist Press.
Harvard
Sheerin J. B., . (1967). A practical guide to ecumenism. New York: Paulist Press.
MLA
Sheerin John B, . A practical guide to ecumenism. New York: Paulist Press. 1967.
