| APA | Smart Define. (1970). material resources shortage thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/material_resources_shortage/thesaurus/broader |
| Chicago | Smart Define. 1970. "material resources shortage thesaurus" https://smartdefine.org/material_resources_shortage/thesaurus/broader (accessed September 25, 2026). |
| Harvard | Smart Define 1970, material resources shortage thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/material_resources_shortage/thesaurus/broader>. |
| MLA | Smart Define. "material resources shortage thesaurus" 1 January 1970. Web. 25 September 2026. <https://smartdefine.org/material_resources_shortage/thesaurus/broader> |