Adiidiin - Sculpting Anatomy and Form

Janeiro:
Adiidiin - Head planes
Doris Fiebig - Head planes
YanSculpts - Stylized male head
Merce - Stylized male head
Speedchar - Male head

Outros:
https://skfb.ly/6Ds7S
https://skfb.ly/6EzvG
https://skfb.ly/6ZnQo
https://skfb.ly/XYTR
https://skfb.ly/opFMu
https://skfb.ly/DXNo
https://skfb.ly/RqrB
https://www.youtube.com/watch?v=kYtGh2xTAlg
https://www.artstation.com/artwork/ZGJZON
https://www.artstation.com/artwork/8e6dKx
https://www.artstation.com/artwork/zAkGBd
https://www.artstation.com/artwork/rJeEdL
https://www.artstation.com/artwork/YKyN6K
https://www.artstation.com/artwork/03gJg5
https://www.blendernation.com/2014/03/29/sculpting-tutorial-planes-of-the-face/
Uldis Zarins & Sandis Kondrats - Anatomy For Sculptors (p. 107)
Vladimir Mogilevtsev - Fundamentals of Drawing (p.20)