Skin Tone Reference for Digital Painting - Commentary by Renée Chio
Anatomy Next - store - SOFTCOVER + EBOOK (DELIVERY JUNE 2016)
Here are some face abstractions by Kevin Chen, maybe usefull for some.
Drawing of the Head | Deborah Ridgley - Blog
zbrush patterns - Google Search
A wonderful book: Die Gestalt des Menschen by Gottfried Bammes via PinCG.com
044 | Anatomy References for Artists via PinCG.com