John, P. (2012). Analyzing public policy (Second edition.). Routledge.
Chicago Style aipamenaJohn, Peter. Analyzing Public Policy. Second edition. Abingdon, Oxon ; New York: Routledge, 2012.
MLA aipamenaJohn, Peter. Analyzing Public Policy. Second edition. Routledge, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.