APA

Bea A. C., . (1963). The unity of Christians. New York: Herder.

Chicago

Bea Augustin Cardinal, . 1963. The unity of Christians. New York: Herder.

Harvard

Bea A. C., . (1963). The unity of Christians. New York: Herder.

MLA

Bea Augustin Cardinal, . The unity of Christians. New York: Herder. 1963.