APA

Gearon P. J., . (1930). Catholicism. St. Louis: B. Herder Book Co.

Chicago

Gearon Patrick J, . 1930. Catholicism. St. Louis: B. Herder Book Co.

Harvard

Gearon P. J., . (1930). Catholicism. St. Louis: B. Herder Book Co.

MLA

Gearon Patrick J, . Catholicism. St. Louis: B. Herder Book Co. 1930.