| APA | Smart Define. (2013). unpaid worker thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unpaid_worker/thesaurus/narrower |
| Chicago | Smart Define. 2013. "unpaid worker thesaurus" https://smartdefine.org/unpaid_worker/thesaurus/narrower (accessed September 29, 2026). |
| Harvard | Smart Define 2013, unpaid worker thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unpaid_worker/thesaurus/narrower>. |
| MLA | Smart Define. "unpaid worker thesaurus" 19 May 2013. Web. 29 September 2026. <https://smartdefine.org/unpaid_worker/thesaurus/narrower> |