Cvijanović, Drago, and Predrag Vuković. “ROLE OF MARKETING TOURISM IN DANUBE REGION IN REPUBLIC OF SERBIA”. Ekonomika poljoprivrede 59, no. 3 (September 30, 2012): 559–560. Accessed April 28, 2025. https://ea.bg.ac.rs/index.php/EA/article/view/577.