APA (7th ed.) Citation

Jäger, O., & Ontañón, J. (1892). Historia universal. El Progreso Editorial.

Chicago Style (17th ed.) Citation

Jäger, Oskar, and José Ontañón. Historia Universal. Madrid: El Progreso Editorial, 1892.

MLA (9th ed.) Citation

Jäger, Oskar, and José Ontañón. Historia Universal. El Progreso Editorial, 1892.

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