Cita APA (7th ed.)

Martin, J. (1992). The encyclopedia of colored pencil techniques. Rockport Pub.

Cita Chicago (17th ed.)

Martin, Judy. The Encyclopedia of Colored Pencil Techniques. Rockport, Mass: Rockport Pub, 1992.

Cita MLA (9th ed.)

Martin, Judy. The Encyclopedia of Colored Pencil Techniques. Rockport Pub, 1992.