Lewandowski, Mariusz. “MEASUREMENT OF SOCIAL MEDIA AS AN ELEMENT OF KNOWLEDGE AND INFORMATION MANAGEMENT IN THE COMPANIES”. Acta Universitatis Nicolai Copernici. Management 45, no. 4 (April 2, 2019): 115–122. Accessed July 19, 2024. https://apcz.umk.pl/AUNC_ZARZ/article/view/AUNC_ZARZ.2018.049.