APA
Ratzinger J., . (1966). The open circle : the mining of Christian brotherhood. New York: Sheed & Ward.
Chicago
Ratzinger Joseph, . 1966. The open circle : the mining of Christian brotherhood. New York: Sheed & Ward.
Harvard
Ratzinger J., . (1966). The open circle : the mining of Christian brotherhood. New York: Sheed & Ward.
MLA
Ratzinger Joseph, . The open circle : the mining of Christian brotherhood. New York: Sheed & Ward. 1966.
