Butterfield, J. (2018). Soft Skills for Everyone. Cengage Learning.
Chicago-čujuhus (17. p.)Butterfield, Jeff. Soft Skills for Everyone. Delhi: Cengage Learning, 2018.
MLA-čujuhus (9. p.)Butterfield, Jeff. Soft Skills for Everyone. Cengage Learning, 2018.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.