linsel, h., & sach, k. (1965). practical problems of investment: Planning and financing. National Planning Institute.
Чикаго стиль цитування (17-те видання)linsel, hermann, та kurt sach. Practical Problems of Investment: Planning and Financing. cairo: National Planning Institute, 1965.
Стиль цитування MLA (9-ме видання)linsel, hermann, та kurt sach. Practical Problems of Investment: Planning and Financing. National Planning Institute, 1965.