Cita APA

Martin, J., Kirby, K., Vinall, A., & Gair, A. (1992). The encyclopedia of colored pencil techniques. Rockport Publishers.

Citación estilo Chicago

Martin, Judy, Kate Kirby, Ashleigh Vinall, and Angie Gair. The Encyclopedia of Colored Pencil Techniques. Rockport, Mass: Rockport Publishers, 1992.

Cita MLA

Martin, Judy, et al. The Encyclopedia of Colored Pencil Techniques. Rockport Publishers, 1992.