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| APA | Smart Define. (2015). sonic barrier thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sonic_barrier/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "sonic barrier thesaurus" https://smartdefine.org/sonic_barrier/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, sonic barrier thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sonic_barrier/thesaurus/synonyms>. |
| MLA | Smart Define. "sonic barrier thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/sonic_barrier/thesaurus/synonyms> |