Lewis, D. (1983). Watercolor painting techniques. Watson-Guptill Publications.
Čikaški stil citiranja (17. izdanje)Lewis, David. Watercolor Painting Techniques. New York: Watson-Guptill Publications, 1983.
MLA način citiranja (9. izdanje)Lewis, David. Watercolor Painting Techniques. Watson-Guptill Publications, 1983.
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