sack, K., & linsel, h. (1966). planning of technical progress in industry: Planning of introducing new technique into production. the institute of national planning.
Chicago-čujuhus (17. p.)sack, K., juo hermann linsel. Planning of Technical Progress in Industry: Planning of Introducing New Technique into Production. cairo: the institute of national planning, 1966.
MLA-čujuhus (9. p.)sack, K., juo hermann linsel. Planning of Technical Progress in Industry: Planning of Introducing New Technique into Production. the institute of national planning, 1966.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.