| APA | Smart Define. (2011). boundary-line thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/boundary-line/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "boundary-line thesaurus" https://smartdefine.org/boundary-line/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2011, boundary-line thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/boundary-line/thesaurus/synonyms>. |
| MLA | Smart Define. "boundary-line thesaurus" 29 May 2011. Web. 24 September 2026. <https://smartdefine.org/boundary-line/thesaurus/synonyms> |