| APA | Smart Define. (2013). colour in thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/colour_in/thesaurus/narrower |
| Chicago | Smart Define. 2013. "colour in thesaurus" https://smartdefine.org/colour_in/thesaurus/narrower (accessed September 25, 2026). |
| Harvard | Smart Define 2013, colour in thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/colour_in/thesaurus/narrower>. |
| MLA | Smart Define. "colour in thesaurus" 28 June 2013. Web. 25 September 2026. <https://smartdefine.org/colour_in/thesaurus/narrower> |