APA (7th ed.) Citation

Roman Leal, J., & Beltran, L. (1860). Filosofía social. [s.n.].

Chicago Style (17th ed.) Citation

Roman Leal, José, and Luis Beltran. Filosofía Social. Madrid: [s.n.], 1860.

MLA (9th ed.) Citation

Roman Leal, José, and Luis Beltran. Filosofía Social. [s.n.], 1860.

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