Halsall, F. (1996). Data communications, computer networks, and open systems (4th ed.). Addison-Wesley Pub. Co., ; Pearson Education.
Lua i Stíl Chicago (17ú heag.)Halsall, Fred. Data Communications, Computer Networks, and Open Systems. 4th ed. Wokingham, England ; Reading, Mass. : Delhi: Addison-Wesley Pub. Co., ; Pearson Education, 1996.
Lua MLA (8ú heag.)Halsall, Fred. Data Communications, Computer Networks, and Open Systems. 4th ed. Addison-Wesley Pub. Co., ; Pearson Education, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.