Samuelson، Paul (نوفمبر 1954). "The Pure Theory of Public Expenditure". The Review of Economics and Statistics. ج. 36 ع. 4: 387–389. DOI:10.2307/1925895. JSTOR:1925895.
Samuelson، Paul (نوفمبر 1954). "The Pure Theory of Public Expenditure". The Review of Economics and Statistics. ج. 36 ع. 4: 387–389. DOI:10.2307/1925895. JSTOR:1925895.