Cita APA (7a ed.)

Sheerin, J. B. (1967). A practical guide to ecumenism (Rev. ed.). Paulist Press.

Cita Chicago Style (17a ed.)

Sheerin, John B. A Practical Guide to Ecumenism. Rev. ed. New York [etc.]: Paulist Press, 1967.

Cita MLA (9a ed.)

Sheerin, John B. A Practical Guide to Ecumenism. Rev. ed. Paulist Press, 1967.