Harrigan, J. J. (1988). Politics and policy in States and communities (3rd ed.). Scott, Foresman.
Lua i Stíl Chicago (17ú heag.)Harrigan, John J. Politics and Policy in States and Communities. 3rd ed. Boston: Scott, Foresman, 1988.
Lua MLA (9ú heag.)Harrigan, John J. Politics and Policy in States and Communities. 3rd ed. Scott, Foresman, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.