Pius, P. C. C. P. (1937). On the religious situation in Mexico, apostolic letter of His Holiness, Pope Pius XI, issued March 28, 1937. Washington, D.C..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPius, Pope; Catholic Church. Pope. On the Religious Situation in Mexico, Apostolic Letter of His Holiness, Pope Pius XI, Issued March 28, 1937. Washington, D.C., 1937.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPius, Pope; Catholic Church. Pope. On the Religious Situation in Mexico, Apostolic Letter of His Holiness, Pope Pius XI, Issued March 28, 1937. Washington, D.C., 1937.
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