Yurgiden, Hatip. “The New Dimension of Trade and Economy As a New Business Model: Space Tourism and Space Economy”. EUROASIA JOURNAL OF SOCIAL SCIENCES & HUMANITIES 10, no. 34 (October 21, 2023): 98–111. Accessed December 4, 2024. https://euroasiajournal.com/index.php/eurssh/article/view/420.