APA (7th ed.) Citation

May, W. E. (1990). Principios de vida moral. EIUNSA.

Chicago Style (17th ed.) Citation

May, William E. Principios De Vida Moral. Barcelona: EIUNSA, 1990.

MLA (9th ed.) Citation

May, William E. Principios De Vida Moral. EIUNSA, 1990.

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