APA (7th ed.) Citation

Geiermann, P. (1937). The convert's catechism of Catholic doctrine (12th ed.). B. Herder Book Co..

Chicago Style (17th ed.) Citation

Geiermann, Peter. The Convert's Catechism of Catholic Doctrine. 12th ed. St. Louis: B. Herder Book Co., 1937.

MLA (8th ed.) Citation

Geiermann, Peter. The Convert's Catechism of Catholic Doctrine. 12th ed. B. Herder Book Co., 1937.