linsel, h., & sack, k. (1965). theoretical problems of industrial planning. the institute of national planning.
Chicago-viite (17. p.)linsel, h., ja k. sack. Theoretical Problems of Industrial Planning. cairo: the institute of national planning, 1965.
MLA-viite (9. p.)linsel, h., ja k. sack. Theoretical Problems of Industrial Planning. the institute of national planning, 1965.