author = { Marin-Pantelescu, Andreea AND Tachiciu, Laurentiu AND Capusneanu, Sorinel AND Topor, Dan Ioan },

title = { Role of Tour Operators and Travel Agencies in Promoting Sustainable Tourism },

publisher = {Bucharest University of Economic Studies},

isbn = {1582-9146},

isbn = {2247-9104},

year = {2019},

url = { http://slubdd.de/katalog?TN_libero_mab2 }