Twining, W. (1973). Karl Liewellyn And The Realist Movement. Wiederfeld And Hecolson.
Lua i Stíl Chicago (17ú heag.)Twining, William. Karl Liewellyn And The Realist Movement. London: Wiederfeld And Hecolson, 1973.
Lua MLA (9ú heag.)Twining, William. Karl Liewellyn And The Realist Movement. Wiederfeld And Hecolson, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.