Cox, A. (1998). Contracting For Business Success Andrew Cox, Ian Thompson. Thomas Telford.
Lua i Stíl Chicago (17ú heag.)Cox, Andrew. Contracting For Business Success Andrew Cox, Ian Thompson. Thomas Telford, 1998.
Lua MLA (8ú heag.)Cox, Andrew. Contracting For Business Success Andrew Cox, Ian Thompson. Thomas Telford, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.