hansen, b. (1962). output- productivity and value added- productivity. the institute of national planning.
Chicago-čujuhus (17. p.)hansen, bent. Output- Productivity and Value Added- Productivity. cairo: the institute of national planning, 1962.
MLA-čujuhus (9. p.)hansen, bent. Output- Productivity and Value Added- Productivity. the institute of national planning, 1962.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.