| APA | Smart Define. (1970). not for life of me thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/not_for_life_of_me/thesaurus/synonyms |
| Chicago | Smart Define. 1970. "not for life of me thesaurus" https://smartdefine.org/not_for_life_of_me/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 1970, not for life of me thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/not_for_life_of_me/thesaurus/synonyms>. |
| MLA | Smart Define. "not for life of me thesaurus" 1 January 1970. Web. 28 September 2026. <https://smartdefine.org/not_for_life_of_me/thesaurus/synonyms> |