India. Directorate General of Technical Development. Directorate of Public Relations and Publications. Hand book of industrial data. Controller of Publications.
Chicago-referens (17:e uppl.)India. Directorate General of Technical Development. Directorate of Public Relations and Publications. Hand Book of Industrial Data. New Delhi: Controller of Publications.
MLA-referens (8:e uppl.)India. Directorate General of Technical Development. Directorate of Public Relations and Publications. Hand Book of Industrial Data. Controller of Publications.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.