APA (7th ed.) Citation

(1878). [Su santidad el Papa León XIII]. s.n.

Chicago Style (17th ed.) Citation

[Su Santidad El Papa León XIII]. [Madrid: s.n, 1878.

MLA (9th ed.) Citation

[Su Santidad El Papa León XIII]. s.n, 1878.

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