CoVID-19大流行阴影下客服行业的可持续性:波兰客服行业案例研究 帕维达尔克, KatarzynaOrfin-Tomasewska并 PiotrSosnowski E3S网页汇编307(2021)082 DOI: https://doi.org/10.1051/e3sconf/202130708002
