| APA | Smart Define. (-0001). world congress on railway research thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/world_congress_on_railway_research/thesaurus/broader |
| Chicago | Smart Define. -0001. "world congress on railway research thesaurus" https://smartdefine.org/world_congress_on_railway_research/thesaurus/broader (accessed September 30, 2026). |
| Harvard | Smart Define -0001, world congress on railway research thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/world_congress_on_railway_research/thesaurus/broader>. |
| MLA | Smart Define. "world congress on railway research thesaurus" 30 November -0001. Web. 30 September 2026. <https://smartdefine.org/world_congress_on_railway_research/thesaurus/broader> |