00544naa#a2200181#i#450# EN\INFRA-M\bibl\6053 20250119183416.7 2587-9103 20150617b2015####ek#y0engy0150####ca RUS RU Politeness as a Speech Mechanism of Successful Business Communication for Nowaday Professional Journal article Moscow INFRA-M Academic Publishing LLC. 2015 2 с. Journal article local Ershova S. Sirazhova Z. zh-szf.ru