Shearer, J. (2003). The artist's guide to perspective. New Holland.
Cita Chicago Style (17a ed.)Shearer, Janet. The Artist's Guide to Perspective. London: New Holland, 2003.
Cita MLA (8a ed.)Shearer, Janet. The Artist's Guide to Perspective. New Holland, 2003.
Precaución: Estas citas no son 100% exactas.