Catholic Church. Pope (1958-1963 : John XXIII), John XXIII, P., & Gibbons, W. J. (1962). Mater et magistra: Encyclical letter; Christianity and social progress. Paulist Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCatholic Church. Pope (1958-1963 : John XXIII), Pope John XXIII, और William J. Gibbons. Mater Et Magistra: Encyclical Letter; Christianity and Social Progress. [New York]: Paulist Press, 1962.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCatholic Church. Pope (1958-1963 : John XXIII), et al. Mater Et Magistra: Encyclical Letter; Christianity and Social Progress. Paulist Press, 1962.
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