linsel, h., & sack, k. (1965). theoretical problems of investment planning. National Planning Institute.
Chicago-Zitierstil (17. Ausg.)linsel, hermann, und kurt sack. Theoretical Problems of Investment Planning. cairo: National Planning Institute, 1965.
MLA-Zitierstil (9. Ausg.)linsel, hermann, und kurt sack. Theoretical Problems of Investment Planning. National Planning Institute, 1965.