nasr el- din, y. (1970). the transportation problem on the 1620 digital computer. the institute of national planning.
Chicago-čujuhus (17. p.)nasr el- din, yousif. The Transportation Problem on the 1620 Digital Computer. cairo: the institute of national planning, 1970.
MLA-čujuhus (9. p.)nasr el- din, yousif. The Transportation Problem on the 1620 Digital Computer. the institute of national planning, 1970.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.