Friedman, L. G. (1999). The Channel Advantage. Elsevier.
Lua i Stíl Chicago (17ú heag.)Friedman, Lawrence G. The Channel Advantage. New Delhi: Elsevier, 1999.
Lua MLA (9ú heag.)Friedman, Lawrence G. The Channel Advantage. Elsevier, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.