@book { author = {Gajdošík, Tomáš and Gajdošíková, Zuzana and Marčeková, Radka}, title = {Informačné technológie v cestovnom ruchu}, year = {2017}, publisher = {Wolters Kluwer}, isbn = {}, doi = {}, URL = {https://akademia.aspi.sk/kiadvany/153} }