Lua APA (7ú heag.)
Green, T. H. (1967). The principles of political obligation. University of Michigan Press.
Lua i Stíl Chicago (17ú heag.)
Green, Thomas Hill. The Principles of Political Obligation. USA: University of Michigan Press, 1967.
Lua MLA (9ú heag.)
Green, Thomas Hill. The Principles of Political Obligation. University of Michigan Press, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.