Bibliografia
Principal
- AYRES, James (1985) The artist's craft: a history of tools, techniques, and materials
- DANTZIC, Cynthia (1999) How to Draw: A Complete Guide to Techniques and Appreciation
- GOODMAN, Paul (1994) Looking at Prints, Drawings and Watercolors. A Guide to Technical Terms.
- MAYER, Ralph (1940) The Artist's Handbook of Materials and Techniques. Fifth Edition, Revised and Updated
- WATROUS, James (2002) The Craft of Old-Master Drawings