Catholic Church. Leo XIII, P. (1889). Sanctissimi Domini nostri Leonis Divina Providentia Papae XIII. Epistola de Magno Lycaeo Catholico Foederatorum Americae Septentrionalis Statuum in urbe Washington Constituto. Rome.
Chicago Style (17th ed.) CitationCatholic Church. Leo XIII, Pope. Sanctissimi Domini Nostri Leonis Divina Providentia Papae XIII. Epistola De Magno Lycaeo Catholico Foederatorum Americae Septentrionalis Statuum in Urbe Washington Constituto. Rome, 1889.
MLA引文Catholic Church. Leo XIII, Pope. Sanctissimi Domini Nostri Leonis Divina Providentia Papae XIII. Epistola De Magno Lycaeo Catholico Foederatorum Americae Septentrionalis Statuum in Urbe Washington Constituto. Rome, 1889.
警告：这些引文格式不一定是100％准确.