BOSÁK, Martin - TARČA, Alexander - KRAJŇÁK, Stanislav. Eco-labeling in Slovak Republic according to the norm ISO 14020. In Marketing management, trade, financial and social aspects of business. International scientific conference. Marketing management, trade, financial and social aspects of business : conference proceedings of the 4th international scientific conference : october 20 - 21, 2016, Košice, Slovak Republic. - Košice : Faculty of Business Economics with seat in Košice, 2016. ISBN 978-80-225-4293-7, s. 11-20 online.