5Kathleen Ferraiolo. Morality Framing in U.S. Drug Control Policy: An Example From Marijuana Decrimi- nalization[J]. World Medical & Health Policy. December 2014, Volume 6(Issue 4):348.
6Tala Hadavi. Medical Marijuana Legal in US Capital [ EB/OL ]. http ://www. 51 voa. com/VOA_Standard_ English/medical-marijuana-legal-in-nations-capital-53281. html ,2013 -10-24 /2015-03 -15.
7Rosalie Liccardo Pacula. Marijuana Liberalization Policies: Why We Cant Learn Much from Policy Still in Motion[ J ]. Journal of Policy Analysis and Management,2014, Volume 33 ( Issue 1 ) :212 - 214.
8Kathleen Ferraiolo. Morality Framing in U.S. Drug Control Policy: An Example From Marijuana Decrimi- nalization[J]. World Medical & Health Policy. December 2014, Volume 6( Issue 4):352.