khalid, r. o. (1962). economic development and international equilbrium. the institute of national planning.
Chicago-referens (17:e uppl.)khalid, r. o. Economic Development and International Equilbrium. cairo: the institute of national planning, 1962.
MLA-referens (9:e uppl.)khalid, r. o. Economic Development and International Equilbrium. the institute of national planning, 1962.