ESSEN ELECTRONICS. (1987). SN-PC PC-XT USER MANNUAL. ESSEN ELECTRONICS.
Chicago-čujuhus (17. p.)ESSEN ELECTRONICS. SN-PC PC-XT USER MANNUAL. BOMBAY: ESSEN ELECTRONICS, 1987.
MLA-čujuhus (9. p.)ESSEN ELECTRONICS. SN-PC PC-XT USER MANNUAL. ESSEN ELECTRONICS, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.