linsel, h., & sack, k. (1965). theoretical problems of investment planning. National Planning Institute.
Цитирование в стиле Чикаго (17-е изд.)linsel, hermann, и kurt sack. Theoretical Problems of Investment Planning. cairo: National Planning Institute, 1965.
Цитирование MLA (9-е изд.)linsel, hermann, и kurt sack. Theoretical Problems of Investment Planning. National Planning Institute, 1965.