Ury, W. L. (2000). The Third Side. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Ury, William L. The Third Side. Penguin Books, 2000.
Lua MLA (9ú heag.)Ury, William L. The Third Side. Penguin Books, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.