Παραπομπή σε μορφή APA (7η εκδ.)

Howlett, M. P., & Ramesh, M. (1995). Studying public policy: Policy cycles and policy subsystems. Oxford University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Howlett, Michael Patrick, και M. Ramesh. Studying Public Policy: Policy Cycles and Policy Subsystems. Toronto: Oxford University Press, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Howlett, Michael Patrick, και M. Ramesh. Studying Public Policy: Policy Cycles and Policy Subsystems. Oxford University Press, 1995.