Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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