Singer, H. W. (1982). Technologies for basic needs (Second edition.). International Labour Office.
Chicago-referens (17:e uppl.)Singer, H. W. Technologies for Basic Needs. Second edition. Geneva: International Labour Office, 1982.
MLA-referens (8:e uppl.)Singer, H. W. Technologies for Basic Needs. Second edition. International Labour Office, 1982.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.