Schuchard, C. Lutheran Pastor Challenges Pope Pius XI on Recent Encyclical, An Invitation Declined and a Challenge Extended. Philadelphia.
Chicago-viite (17. p.)Schuchard, C.B. Lutheran Pastor Challenges Pope Pius XI on Recent Encyclical, An Invitation Declined and a Challenge Extended. Philadelphia.
MLA-viite (8. p.)Schuchard, C.B. Lutheran Pastor Challenges Pope Pius XI on Recent Encyclical, An Invitation Declined and a Challenge Extended. Philadelphia.
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