| APA | Smart Define. (2013). over-the-counter drugs thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/over-the-counter_drugs/thesaurus/broader |
| Chicago | Smart Define. 2013. "over-the-counter drugs thesaurus" https://smartdefine.org/over-the-counter_drugs/thesaurus/broader (accessed October 2, 2026). |
| Harvard | Smart Define 2013, over-the-counter drugs thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/over-the-counter_drugs/thesaurus/broader>. |
| MLA | Smart Define. "over-the-counter drugs thesaurus" 13 June 2013. Web. 2 October 2026. <https://smartdefine.org/over-the-counter_drugs/thesaurus/broader> |