| APA | Smart Define. (1970). a-cappella music thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/a-cappella_music/thesaurus/related |
| Chicago | Smart Define. 1970. "a-cappella music thesaurus" https://smartdefine.org/a-cappella_music/thesaurus/related (accessed September 27, 2026). |
| Harvard | Smart Define 1970, a-cappella music thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/a-cappella_music/thesaurus/related>. |
| MLA | Smart Define. "a-cappella music thesaurus" 1 January 1970. Web. 27 September 2026. <https://smartdefine.org/a-cappella_music/thesaurus/related> |