linsel, h., & sack, k. (1965). theoretical problems of investment planning. National Planning Institute.
Style de citation Chicago (17e éd.)linsel, hermann, et kurt sack. Theoretical Problems of Investment Planning. cairo: National Planning Institute, 1965.
Style de citation MLA (9e éd.)linsel, hermann, et kurt sack. Theoretical Problems of Investment Planning. National Planning Institute, 1965.