| APA | Smart Define. (2011). Battle of Britain thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/battle_of_britain/thesaurus/broader |
| Chicago | Smart Define. 2011. "Battle of Britain thesaurus" https://smartdefine.org/battle_of_britain/thesaurus/broader (accessed September 23, 2026). |
| Harvard | Smart Define 2011, Battle of Britain thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/battle_of_britain/thesaurus/broader>. |
| MLA | Smart Define. "Battle of Britain thesaurus" 26 April 2011. Web. 23 September 2026. <https://smartdefine.org/battle_of_britain/thesaurus/broader> |