APA (7th ed.) Citation

De Castro, L. D., & De Villa, A. M. Ethics & logic: Basic concepts.

Chicago Style (17th ed.) Citation

De Castro, Leonardo D., and Agerico M. De Villa. Ethics & Logic: Basic Concepts.

MLA (9th ed.) Citation

De Castro, Leonardo D., and Agerico M. De Villa. Ethics & Logic: Basic Concepts.

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