Citação norma APA

Leo XIII, P. (1878). The great pastoral letters of Cardinal Pecci (now Pope Leo XIII) on the church and civilization. New York.

Citação norma Chicago

Leo XIII, Pope. The Great Pastoral Letters of Cardinal Pecci (now Pope Leo XIII) on the Church and Civilization. New York, 1878.

Citação norma MLA

Leo XIII, Pope. The Great Pastoral Letters of Cardinal Pecci (now Pope Leo XIII) on the Church and Civilization. New York, 1878.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.