Gill, C., & Means, B. (2011). Powerful watercolor landscapes: 37 tools for painting with impact. North Light Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGill, Catherine, और Beth Means. Powerful Watercolor Landscapes: 37 Tools for Painting with Impact. Cincinnati, Ohio: North Light Books, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGill, Catherine, और Beth Means. Powerful Watercolor Landscapes: 37 Tools for Painting with Impact. North Light Books, 2011.
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