| APA | Smart Define. (2016). second battle of ypres thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/second_battle_of_ypres/thesaurus/broader |
| Chicago | Smart Define. 2016. "second battle of ypres thesaurus" https://smartdefine.org/second_battle_of_ypres/thesaurus/broader (accessed September 26, 2026). |
| Harvard | Smart Define 2016, second battle of ypres thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/second_battle_of_ypres/thesaurus/broader>. |
| MLA | Smart Define. "second battle of ypres thesaurus" 12 February 2016. Web. 26 September 2026. <https://smartdefine.org/second_battle_of_ypres/thesaurus/broader> |