Hayden, G. (2016). What is philosophy?: A guide to the world of thought and logic. Metro Books.
Cita Chicago (17th ed.)Hayden, Gary. What Is Philosophy?: A Guide to the World of Thought and Logic. New York: Metro Books, 2016.
Cita MLA (9th ed.)Hayden, Gary. What Is Philosophy?: A Guide to the World of Thought and Logic. Metro Books, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.