CAPELLE, W. F. (1969). Professional Perspective Drawing For Architects And Engineers. McGraw-Hill.
Chicago-referens (17:e uppl.)CAPELLE, W. Friedrich. Professional Perspective Drawing For Architects And Engineers. McGraw-Hill, 1969.
MLA-referens (8:e uppl.)CAPELLE, W. Friedrich. Professional Perspective Drawing For Architects And Engineers. McGraw-Hill, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.