| APA | Smart Define. (2011). Humphrey DeForest Bogart thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/humphrey_deforest_bogart/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "Humphrey DeForest Bogart thesaurus" https://smartdefine.org/humphrey_deforest_bogart/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2011, Humphrey DeForest Bogart thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/humphrey_deforest_bogart/thesaurus/synonyms>. |
| MLA | Smart Define. "Humphrey DeForest Bogart thesaurus" 26 April 2011. Web. 23 September 2026. <https://smartdefine.org/humphrey_deforest_bogart/thesaurus/synonyms> |