Sanctissimi Domini Nostri Leonis Divina Providentia Papae XIII Epistola encyclica :
ad Patriarchas Primates Archiepiscopos et Episcopos universos Catholici orbis ...
APA Citation
Catholic Church. Pope (1878-1903 : Leo XIII)., Leo XIII, P. (1879). Sanctissimi Domini Nostri Leonis Divina Providentia Papae XIII Epistola encyclica: ad Patriarchas Primates Archiepiscopos et Episcopos universos Catholici orbis ... Romae: [s.n.].
MLA Citation
Catholic Church. Pope (1878-1903 : Leo XIII), and Pope Leo XIII. Sanctissimi Domini Nostri Leonis Divina Providentia Papae XIII Epistola Encyclica: Ad Patriarchas Primates Archiepiscopos Et Episcopos Universos Catholici Orbis ... Romae: [s.n.], 1879.
Warning: These citations may not always be complete (especially for serials).