Szymańska, Kamila, ed. “ Using of Portfolio Brand Strategy – The Case Study of Łódzki Dom Kultury”. In The Best Practice of Marketing Management in Polish and International Enterprises: The Marriage of Science and Business – Case Studies, 79–90. The Academy of Management and Finance. Poland: Lodz University Press, 2022. Accessed January 23, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/793/chapter/1961.