| APA | Smart Define. (1970). cusp of second kind thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/cusp_of_second_kind/thesaurus/broader |
| Chicago | Smart Define. 1970. "cusp of second kind thesaurus" https://smartdefine.org/cusp_of_second_kind/thesaurus/broader (accessed September 23, 2026). |
| Harvard | Smart Define 1970, cusp of second kind thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/cusp_of_second_kind/thesaurus/broader>. |
| MLA | Smart Define. "cusp of second kind thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/cusp_of_second_kind/thesaurus/broader> |