Walewska, Agnieszka Maria. 2015. “Contemporary Marketing Communication in Web 2.0 Environment. The Potential of Viral Marketing and Social Media in a Common Building of a Consumer Value”. In Funkcjonowanie E-Biznesu. Zasoby, Procesy, Technologie, edited by Maria Czajkowska and Maciej Malarski, 159-69. Management. Poland: Lodz University Press. https://doi.org/10.18778/8088-106-8.15.