Hart H. L. A. (1970). The Concept Of Law. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Hart H. L. A. The Concept Of Law. London: Oxford University Press, 1970.
Lua MLA (9ú heag.)Hart H. L. A. The Concept Of Law. Oxford University Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.