APA (7th ed.) Citation

Ortega y Gasset, J. (2002). What is knowledge? State University of New York Press.

Chicago Style (17th ed.) Citation

Ortega y Gasset, José. What Is Knowledge? Albany: State University of New York Press, 2002.

MLA (9th ed.) Citation

Ortega y Gasset, José. What Is Knowledge? State University of New York Press, 2002.