Callahan, J. T. (1998). Managing transit construction contract claims. National Academy Press.
Lua i Stíl Chicago (17ú heag.)Callahan, Joel T. Managing Transit Construction Contract Claims. Washington, D.C: National Academy Press, 1998.
Lua MLA (9ú heag.)Callahan, Joel T. Managing Transit Construction Contract Claims. National Academy Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.