Hollerbach, S., & Schlemm, B. L. (1999). The Best of watercolor, volume 3. Quarry Books.
Lua i Stíl Chicago (17ú heag.)Hollerbach, Serge, agus Betty L. Schlemm. The Best of Watercolor, Volume 3. Gloucester, Mass: Quarry Books, 1999.
Lua MLA (9ú heag.)Hollerbach, Serge, agus Betty L. Schlemm. The Best of Watercolor, Volume 3. Quarry Books, 1999.
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