| APA | Smart Define. (1970). man-made warning system thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/man-made_warning_system/thesaurus/broader |
| Chicago | Smart Define. 1970. "man-made warning system thesaurus" https://smartdefine.org/man-made_warning_system/thesaurus/broader (accessed September 23, 2026). |
| Harvard | Smart Define 1970, man-made warning system thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/man-made_warning_system/thesaurus/broader>. |
| MLA | Smart Define. "man-made warning system thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/man-made_warning_system/thesaurus/broader> |