Blake, R. (2002). Electronic Communication systems (2.). Cengage Learning.
Chicago-čujuhus (17. p.)Blake, Roy. Electronic Communication Systems. 2. Delmar: Cengage Learning, 2002.
MLA-čujuhus (9. p.)Blake, Roy. Electronic Communication Systems. 2. Cengage Learning, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.