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..
Citação do estilo Chicago (17ª ed.)Pius, 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.
Citação MLA (8ª ed.)Pius, 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.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.