Cita APA (7a ed.)

Martín i Roig, G. (2005). Line and shading in drawing (1st U.S. ed.). Barron's Educational Series.

Cita Chicago Style (17a ed.)

Martín i Roig, Gabriel. Line and Shading in Drawing. 1st U.S. ed. Hauppauge, NY: Barron's Educational Series, 2005.

Cita MLA (8a ed.)

Martín i Roig, Gabriel. Line and Shading in Drawing. 1st U.S. ed. Barron's Educational Series, 2005.

Precaución: Estas citas no son 100% exactas.