APA (7th ed.) Citation

O'Carroll, M. (1941). The secret of Knock (2nd ed.). Holy Ghost Fathers.

Chicago Style (17th ed.) Citation

O'Carroll, Michael. The Secret of Knock. 2nd ed. Kimmage, Dublin: Holy Ghost Fathers, 1941.

MLA (8th ed.) Citation

O'Carroll, Michael. The Secret of Knock. 2nd ed. Holy Ghost Fathers, 1941.