BARRELL, A. (1993). Executive Networking. Direktor Books.
Lua i Stíl Chicago (17ú heag.)BARRELL, Alan. Executive Networking. Direktor Books, 1993.
Lua MLA (8ú heag.)BARRELL, Alan. Executive Networking. Direktor Books, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.