APA (7th ed.) Citation

(1901). De civili principatu romanorum pontificum: Excerpta ex actis Pii IX et SS.D.N. Leonis Papae XIII. Typis Vaticanis.

Chicago Style (17th ed.) Citation

De Civili Principatu Romanorum Pontificum: Excerpta Ex Actis Pii IX Et SS.D.N. Leonis Papae XIII. Romae: Typis Vaticanis, 1901.

MLA (9th ed.) Citation

De Civili Principatu Romanorum Pontificum: Excerpta Ex Actis Pii IX Et SS.D.N. Leonis Papae XIII. Typis Vaticanis, 1901.

Warning: These citations may not always be 100% accurate.