Richardson, J. A. (1980). Art: The way it is (2d ed.). Prentice-Hall.
Cita Chicago (17th ed.)Richardson, John Adkins. Art: The Way It Is. 2d ed. Englewood Cliffs, N.J: Prentice-Hall, 1980.
Cita MLA (9th ed.)Richardson, John Adkins. Art: The Way It Is. 2d ed. Prentice-Hall, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.