Rubtsova, M., E. Kapustkina, R. Karapetyan, I. Kovalev, and S. Rasskazov. “The Social Environment and Business Communication in English: A Small-Scale Research on Front-Line Staff Performance in Russia, Spain and France”. International Review of Management and Marketing, vol. 5, no. 4, Oct. 2015, pp. 253-8, https://econjournals.com/index.php/irmm/article/view/1485.