HVIZDOVÁ, Eva - HVIZDOVÁ, Eva, ml. Marketing and the Possibilities of the Development of International Cooperation of Prešov Region with the Polish Side in the Area of Tourist Traffic, Country Tourism and Agrotourism. In Problems of modern management. - Kraków : Wydawnictwo Wyższej Szkoly Zawodowej im. ks. Bronisława Markiewicza w Jarosławiu, 2009. ISBN 978-83-88139-21-5, s. 25-47.