Tuhovsky,IAN. (2020). Effective Communication Skills Mastery Bible: 4 Books in 1 (NA.). Amazon.
Chicago-čujuhus (17. p.)Tuhovsky,IAN. Effective Communication Skills Mastery Bible: 4 Books in 1. NA. Amazon, 2020.
MLA-čujuhus (9. p.)Tuhovsky,IAN. Effective Communication Skills Mastery Bible: 4 Books in 1. NA. Amazon, 2020.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.