(1989). Control of engineering projects ed. S.H. Wearne. Thomas Telford.
Lua i Stíl Chicago (17ú heag.)Control of Engineering Projects Ed. S.H. Wearne. Thomas Telford, 1989.
Lua MLA (8ú heag.)Control of Engineering Projects Ed. S.H. Wearne. Thomas Telford, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.