The twentieth century face
Tài liệu tham khảo
Thompson, 1925, Facial Development, International Journal of Orthodontia
Keith, 1922, Growth of the Human Face, International Journal of Orthodpntia
Shaw, 1924, Form and Function in Teeth, Intenrational Journal of Orthodontia
Dewey, Martin: Comparative Anatomy, St. Louis, C. V. Mosby Co. Cunningham: Textbook of Anatomy.
Sergi, Guiseppi: L'Huomo.
Keith, Sir Arthur: Antiquity of Man.