| APA | Smart Define. (1970). 4x game thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/4x_game/thesaurus/broader |
| Chicago | Smart Define. 1970. "4x game thesaurus" https://smartdefine.org/4x_game/thesaurus/broader (accessed September 23, 2026). |
| Harvard | Smart Define 1970, 4x game thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/4x_game/thesaurus/broader>. |
| MLA | Smart Define. "4x game thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/4x_game/thesaurus/broader> |