Source: The New Drawing on the Right Side of the Brain (1979), p.237
Betty Edwards: Citations en anglais
Source: The New Drawing on the Right Side of the Brain (1979), p.196
Source: The New Drawing on the Right Side of the Brain (1979), p.237
Source: The New Drawing on the Right Side of the Brain (1979), p.239
Source: The New Drawing on the Right Side of the Brain (1979), p.239
Source: The New Drawing on the Right Side of the Brain (1979), p.196