Wollheim. Art and Its Objects (2nd edition.). Cambridge University Press.
Cita Chicago (17th ed.)Wollheim. Art and Its Objects. 2nd edition. London / Delhi / New York: Cambridge University Press.
Cita MLA (9th ed.)Wollheim. Art and Its Objects. 2nd edition. Cambridge University Press.
Atenció: Aquestes cites poden no estar 100% correctes.