APA (7th ed.) Zitazioa
Karch, A. (2007). Democratic laboratories: Policy diffusion among the American states. University of Michigan Press.
Chicago Style (17th ed.) Zitazioa
Karch, Andrew. Democratic Laboratories: Policy Diffusion Among the American States. Ann Arbor: University of Michigan Press, 2007.
MLA (9th ed.) Zitazioa
Karch, Andrew. Democratic Laboratories: Policy Diffusion Among the American States. University of Michigan Press, 2007.
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