APA (7th ed.) Zitazioa
Béland, D., & Waddan, A. (2012). The politics of policy change: Welfare, Medicare, and social security reform in the United States. Georgetown University Press.
Chicago Style (17th ed.) Zitazioa
Béland, Daniel, eta Alex Waddan. The Politics of Policy Change: Welfare, Medicare, and Social Security Reform in the United States. Washington, DC: Georgetown University Press, 2012.
MLA (9th ed.) Zitazioa
Béland, Daniel, eta Alex Waddan. The Politics of Policy Change: Welfare, Medicare, and Social Security Reform in the United States. Georgetown University Press, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.