Aberbach, J. D. (1990). Keeping a watchful eye: The politics of congressional oversight. Brookings Institution.
Lua i Stíl Chicago (17ú heag.)Aberbach, Joel D. Keeping a Watchful Eye: The Politics of Congressional Oversight. Washington: Brookings Institution, 1990.
Lua MLA (9ú heag.)Aberbach, Joel D. Keeping a Watchful Eye: The Politics of Congressional Oversight. Brookings Institution, 1990.
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