RICHARDS, P. (1992). Law Of Contract Paul Richards. Pitman Publishing.
Lua i Stíl Chicago (17ú heag.)RICHARDS, Paul. Law Of Contract Paul Richards. Pitman Publishing, 1992.
Lua MLA (8ú heag.)RICHARDS, Paul. Law Of Contract Paul Richards. Pitman Publishing, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.