| APA | Smart Define. (1970). rail travel card thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/rail_travel_card/thesaurus/broader |
| Chicago | Smart Define. 1970. "rail travel card thesaurus" https://smartdefine.org/rail_travel_card/thesaurus/broader (accessed October 2, 2026). |
| Harvard | Smart Define 1970, rail travel card thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/rail_travel_card/thesaurus/broader>. |
| MLA | Smart Define. "rail travel card thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/rail_travel_card/thesaurus/broader> |