OPEN UNIVERSITY. (1980). CASE STUDY STANDARD TELEPHONES AND CABLES. OPEN UNIVERSITY PRESS.
Chicago-čujuhus (17. p.)OPEN UNIVERSITY. CASE STUDY STANDARD TELEPHONES AND CABLES. MILTON KEYNES: OPEN UNIVERSITY PRESS, 1980.
MLA-čujuhus (9. p.)OPEN UNIVERSITY. CASE STUDY STANDARD TELEPHONES AND CABLES. OPEN UNIVERSITY PRESS, 1980.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.