Kollath, R. (1988). Wreaths: Techniques and materials, step-by-step projects, creative ideas for all year round. Facts on File Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKollath, Richard. Wreaths: Techniques and Materials, Step-by-step Projects, Creative Ideas for All Year Round. New York: Facts on File Publications, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKollath, Richard. Wreaths: Techniques and Materials, Step-by-step Projects, Creative Ideas for All Year Round. Facts on File Publications, 1988.
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