APA-čujuhus (7. p.)
Abrahams, J. R., & Lollo, M. (2003). Centrex or PBX: The impact of IP. Artech House.
Chicago-čujuhus (17. p.)
Abrahams, John R., juo Mauro Lollo. Centrex or PBX: The Impact of IP. Boston: Artech House, 2003.
MLA-čujuhus (9. p.)
Abrahams, John R., juo Mauro Lollo. Centrex or PBX: The Impact of IP. Artech House, 2003.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.