| APA | Smart Define. (1970). Oregon silverspot butterfly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/oregon_silverspot_butterfly/thesaurus/broader |
| Chicago | Smart Define. 1970. "Oregon silverspot butterfly thesaurus" https://smartdefine.org/oregon_silverspot_butterfly/thesaurus/broader (accessed September 20, 2026). |
| Harvard | Smart Define 1970, Oregon silverspot butterfly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/oregon_silverspot_butterfly/thesaurus/broader>. |
| MLA | Smart Define. "Oregon silverspot butterfly thesaurus" 1 January 1970. Web. 20 September 2026. <https://smartdefine.org/oregon_silverspot_butterfly/thesaurus/broader> |