Sîrbu, A.-A., and A. C. Dumbravă. “Loneliness at Work and Job Performance: The Role of Burnout and Extraversion”. Psihologia Resurselor Umane, vol. 17, no. 1, Dec. 2019, pp. 7-18, https://hrp-journal.com/index.php/pru/article/view/298.