Riegelman, N. (2016). 9 Heads: A guide to drawing fashion (Fourth edition, revised.). 9 Heads Media.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRiegelman, Nancy. 9 Heads: A Guide to Drawing Fashion. Fourth edition, revised. [Los Angeles, Calif.]: 9 Heads Media, 2016.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRiegelman, Nancy. 9 Heads: A Guide to Drawing Fashion. Fourth edition, revised. 9 Heads Media, 2016.
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