Gramlich, E. M. (1981). Benefit-cost analysis of government programs. Prentice-Hall.
Παραπομπή σε μορφή Chicago (17η εκδ.)Gramlich, Edward M. Benefit-cost Analysis of Government Programs. Englewood Cliffs, N.J.: Prentice-Hall, 1981.
Παραπομπή σε μορφή MLA (9th εκδ.)Gramlich, Edward M. Benefit-cost Analysis of Government Programs. Prentice-Hall, 1981.