PETKOVA, Elena. A New Model for Analysis of Customer Interaction Activities of City Tours Providing Organizations: Implementation to Selective Tours of Sofia, Bulgaria. Turizam, [S. l.], v. 24, n. 2, 2020. DOI: 10.5937/turizam24-24756. Dostupno na: https://asistent.ceon.rs/index.php/turizam/article/view/24756. Pristupljeno: 12 juli. 2026.