Martín i Roig, G., Brunelle, M., & Cortabarria, B. (2010). Practical course in drawing and painting (1st. ed.). Barron's.
Cita Chicago Style (17a ed.)Martín i Roig, Gabriel, Michael Brunelle, y Beatriz Cortabarria. Practical Course in Drawing and Painting. 1st. ed. Hauppauge, N.Y.: Barron's, 2010.
Cita MLA (8a ed.)Martín i Roig, Gabriel, et al. Practical Course in Drawing and Painting. 1st. ed. Barron's, 2010.
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