| APA | Smart Define. (2013). father's younger brother thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/father%27s_younger_brother/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "father's younger brother thesaurus" https://smartdefine.org/father%27s_younger_brother/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2013, father's younger brother thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/father%27s_younger_brother/thesaurus/synonyms>. |
| MLA | Smart Define. "father's younger brother thesaurus" 19 May 2013. Web. 29 September 2026. <https://smartdefine.org/father%27s_younger_brother/thesaurus/synonyms> |