linsel, h., & sack, k. (1965). theoretical problems of investment planning. National Planning Institute.
Cita Chicago (17th ed.)linsel, hermann, i kurt sack. Theoretical Problems of Investment Planning. cairo: National Planning Institute, 1965.
Cita MLA (9th ed.)linsel, hermann, i kurt sack. Theoretical Problems of Investment Planning. National Planning Institute, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.