| APA | Smart Define. (-0001). perkin's line thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/perkin%27s_line/thesaurus/related |
| Chicago | Smart Define. -0001. "perkin's line thesaurus" https://smartdefine.org/perkin%27s_line/thesaurus/related (accessed September 30, 2026). |
| Harvard | Smart Define -0001, perkin's line thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/perkin%27s_line/thesaurus/related>. |
| MLA | Smart Define. "perkin's line thesaurus" 30 November -0001. Web. 30 September 2026. <https://smartdefine.org/perkin%27s_line/thesaurus/related> |