Riddall, J. G. (1991). Jurisprudence. Butterworth.
Lua i Stíl Chicago (17ú heag.)Riddall, J. G. Jurisprudence. London: Butterworth, 1991.
Lua MLA (9ú heag.)Riddall, J. G. Jurisprudence. Butterworth, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.