JOHNSTON ROBERT B. (1998). TRADING SYSTEMS AND ELECTRONIC COMMERCE. ERUDITIONS PUB.
Chicago-čujuhus (17. p.)JOHNSTON ROBERT B. TRADING SYSTEMS AND ELECTRONIC COMMERCE. AUSTRALIA: ERUDITIONS PUB, 1998.
MLA-čujuhus (9. p.)JOHNSTON ROBERT B. TRADING SYSTEMS AND ELECTRONIC COMMERCE. ERUDITIONS PUB, 1998.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.