Campbell, J. L., & Pederson, O. K. (2014). The national origins of policy ideas: Knowledge regimes in the United States, France, Germany, and Denmark. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Campbell, John L., agus Ove K. Pederson. The National Origins of Policy Ideas: Knowledge Regimes in the United States, France, Germany, and Denmark. Princeton, New Jersey: Princeton University Press, 2014.
Lua MLA (9ú heag.)Campbell, John L., agus Ove K. Pederson. The National Origins of Policy Ideas: Knowledge Regimes in the United States, France, Germany, and Denmark. Princeton University Press, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.