Hutchinson, S. E., & Sawyer, S. C. (1980). Laboratory manual for use with computers the user perspective (2nd ed.). Homewood.
Chicago-čujuhus (17. p.)Hutchinson, Sarah E., juo Stacey C. Sawyer. Laboratory Manual for Use with Computers the User Perspective. 2nd ed. Boston: Homewood, 1980.
MLA-čujuhus (9. p.)Hutchinson, Sarah E., juo Stacey C. Sawyer. Laboratory Manual for Use with Computers the User Perspective. 2nd ed. Homewood, 1980.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.