APA (7th ed.) Citation

Sosa, E., & Villanueva, E. (2000). Skepticism. Blackwell.

Chicago Style (17th ed.) Citation

Sosa, Ernest, and Enrique Villanueva. Skepticism. Boston: Blackwell, 2000.

MLA (9th ed.) Citation

Sosa, Ernest, and Enrique Villanueva. Skepticism. Blackwell, 2000.