APA
Namafar. (2024, December 29). Travel and tourism's total contribution to GDP in leading travel markets worldwide, 2019 and 2023 (billion U.S. dollars) [Data set]. Data source: Oxford Economics; WTTC. Translated from the Persian original: https://namafar.ir/stats/26615. https://namafar.com/en/stats/26615
MLA
"Travel and tourism's total contribution to GDP in leading travel markets worldwide, 2019 and 2023 (billion U.S. dollars)." Namafar, 29 December 2024, https://namafar.com/en/stats/26615.
Harvard
Namafar (2024) Travel and tourism's total contribution to GDP in leading travel markets worldwide, 2019 and 2023 (billion U.S. dollars) [Data set]. Available at: https://namafar.com/en/stats/26615 (Accessed: 21 October 2026).
Chicago
Namafar. "Travel and tourism's total contribution to GDP in leading travel markets worldwide, 2019 and 2023 (billion U.S. dollars)." December 29, 2024. https://namafar.com/en/stats/26615.
Vancouver
Namafar. Travel and tourism's total contribution to GDP in leading travel markets worldwide, 2019 and 2023 (billion U.S. dollars) [Data set] [Internet]. Tehran: Namafar; 2024 [cited 2026 Oct 21]. Available from: https://namafar.com/en/stats/26615