Hill, M. (1997). The policy process in the modern state (3rd ed.). Prentice Hall/Harvester Wheatsheaf.
Lua i Stíl Chicago (17ú heag.)Hill, Michael. The Policy Process in the Modern State. 3rd ed. Hertfordshire, HP: Prentice Hall/Harvester Wheatsheaf, 1997.
Lua MLA (9ú heag.)Hill, Michael. The Policy Process in the Modern State. 3rd ed. Prentice Hall/Harvester Wheatsheaf, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.