Gaya APA

XI, P, P., (tr), J, H, R. (1926). Sixteen encyclicals of his holiness pope Pius XI 1926-1937 St. Francis of assisi encyclical letter of his holiness Pope Pius XI . : ncwc news service.

Gaya MLA

XI, Pope, Pius., (tr), James, H., Ryan. "Sixteen encyclicals of his holiness pope Pius XI 1926-1937 St. Francis of assisi encyclical letter of his holiness Pope Pius XI". : ncwc news service, 1926. Text.