Riegelman, N. (2016). 9 Heads: A guide to drawing fashion (Fourth edition, revised.). 9 Heads Media.
Lua i Stíl Chicago (17ú heag.)Riegelman, Nancy. 9 Heads: A Guide to Drawing Fashion. Fourth edition, revised. [Los Angeles, Calif.]: 9 Heads Media, 2016.
Lua MLA (9ú heag.)Riegelman, Nancy. 9 Heads: A Guide to Drawing Fashion. Fourth edition, revised. 9 Heads Media, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.