Dyfyniad APA

Gramlich, E. M. (1981). Benefit-cost analysis of government programs. Prentice-Hall.

Dyfyniad Arddull Chicago

Gramlich, Edward M. Benefit-cost Analysis of Government Programs. Englewood Cliffs, N.J: Prentice-Hall, 1981.

Dyfyniad MLA

Gramlich, Edward M. Benefit-cost Analysis of Government Programs. Prentice-Hall, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.