Richardson, J. A. (1980). Art: The way it is (2d ed.). Prentice-Hall.
Dyfyniad Arddull ChicagoRichardson, John Adkins. Art: The Way It Is. 2d ed. Englewood Cliffs, N.J: Prentice-Hall, 1980.
Dyfyniad MLARichardson, John Adkins. Art: The Way It Is. 2d ed. Prentice-Hall, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.