Anna Szeląg-Sikora (2019). COMPETITIVENESS OF ORGANIC FOOD IN TERMS OF MARKETING ACTIVITIES. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Ecology, Economics, Education and Legislation, 241-248. https://doi.org/10.5593/sgem2019/5.2/s20.031