Frey, M. A. Introduction to contracts and restitution. West.
Lua i Stíl Chicago (17ú heag.)Frey, Martin A. Introduction to Contracts and Restitution. West.
Lua MLA (8ú heag.)Frey, Martin A. Introduction to Contracts and Restitution. West.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.