Não informado. (1979). Construction Contracting. Bobit Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Construction Contracting. Redondo Beach, Calif: Bobit Publishing, 1979.
Lua MLA (8ú heag.)Não informado. Construction Contracting. Bobit Publishing, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.