engert, M. (1963). new trends in polytechnic education special reference to planning of manpower demand in the long run. National Planning Institute.
Chicago-čujuhus (17. p.)engert, M. New Trends in Polytechnic Education Special Reference to Planning of Manpower Demand in the Long Run. cairo: National Planning Institute, 1963.
MLA-čujuhus (9. p.)engert, M. New Trends in Polytechnic Education Special Reference to Planning of Manpower Demand in the Long Run. National Planning Institute, 1963.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.