Não informado. (1989). Technology analysis & strategic management. Carfax Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Technology Analysis & Strategic Management. Abingdon, Inglaterra: Carfax Publishing, 1989.
Lua MLA (8ú heag.)Não informado. Technology Analysis & Strategic Management. Carfax Publishing, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.