| APA | Smart Define. (2016). guardian spirit thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/guardian_spirit/thesaurus/narrower |
| Chicago | Smart Define. 2016. "guardian spirit thesaurus" https://smartdefine.org/guardian_spirit/thesaurus/narrower (accessed September 30, 2026). |
| Harvard | Smart Define 2016, guardian spirit thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/guardian_spirit/thesaurus/narrower>. |
| MLA | Smart Define. "guardian spirit thesaurus" 25 January 2016. Web. 30 September 2026. <https://smartdefine.org/guardian_spirit/thesaurus/narrower> |