Gramlich, E. M. (1981). Benefit-cost analysis of government programs. Prentice-Hall.
Chicago (17e ed.) BronvermeldingGramlich, Edward M. Benefit-cost Analysis of Government Programs. Englewood Cliffs, N.J.: Prentice-Hall, 1981.
MLA (9e ed.) BronvermeldingGramlich, Edward M. Benefit-cost Analysis of Government Programs. Prentice-Hall, 1981.