Crick, B. R. (1973). Basic forms of government: A sketch and a model. Macmillan.
Lua i Stíl Chicago (17ú heag.)Crick, Bernard R. Basic Forms of Government: A Sketch and a Model. London: Macmillan, 1973.
Lua MLA (8ú heag.)Crick, Bernard R. Basic Forms of Government: A Sketch and a Model. Macmillan, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.