Riegelman, N. (2016). 9 Heads: A guide to drawing fashion (Fourth edition, revised.). 9 Heads Media.
芝加哥风格引文Riegelman, Nancy. 9 Heads: A Guide to Drawing Fashion. Fourth edition, revised. [Los Angeles, Calif.]: 9 Heads Media, 2016.
MLA引文Riegelman, Nancy. 9 Heads: A Guide to Drawing Fashion. Fourth edition, revised. 9 Heads Media, 2016.
警告：这些引文格式不一定是100％准确.