Catholic Church. Pope, Fremantle, A. J., Hebblethwaite, M., & Hebblethwaite, P. (1963). The papal encyclicals in their historical context (5th (expanded ed.).). New American Library.
Chicago Style (17. basım) AtıfCatholic Church. Pope, Anne Jackson Fremantle, Margaret Hebblethwaite, ve Peter Hebblethwaite. The Papal Encyclicals in Their Historical Context. 5th (expanded ed.). N.Y.: New American Library, 1963.
MLA (8th ed.) AtıfCatholic Church. Pope, et al. The Papal Encyclicals in Their Historical Context. 5th (expanded ed.). New American Library, 1963.
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