Van Wyk, H. (1997). Painting flowers: The Van Wyk way. Art Instruction Associates.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVan Wyk, Helen. Painting Flowers: The Van Wyk Way. Rockport, Mass: Art Instruction Associates, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVan Wyk, Helen. Painting Flowers: The Van Wyk Way. Art Instruction Associates, 1997.
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