International Telephone and Telegraph Corporation & Federal Telephone and Radio Corporation. (1950). Reference data for radio engineers (3.).
Chicago-čujuhus (17. p.)International Telephone and Telegraph Corporation juo Federal Telephone and Radio Corporation. Reference Data for Radio Engineers. 3. New York :American Book-Straforfd Press, 1950.
MLA-čujuhus (9. p.)International Telephone and Telegraph Corporation juo Federal Telephone and Radio Corporation. Reference Data for Radio Engineers. 3. 1950.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.