Hull , T. E., & By , D.. (1970). Computers and problem solving. Addison Wesley.
Chicago-čujuhus (17. p.)Hull , T. E., juo Day By. Computers and Problem Solving. Canada: Addison Wesley, 1970.
MLA-čujuhus (9. p.)Hull , T. E., juo Day By. Computers and Problem Solving. Addison Wesley, 1970.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.