APA

Baum G., . (1967). Ecumenical theology no. 2. New York: Paulist Press.

Chicago

Baum Gregory, . 1967. Ecumenical theology no. 2. New York: Paulist Press.

Harvard

Baum G., . (1967). Ecumenical theology no. 2. New York: Paulist Press.

MLA

Baum Gregory, . Ecumenical theology no. 2. New York: Paulist Press. 1967.