| APA | Smart Define. (1970). grammar systems theory thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/grammar_systems_theory/thesaurus/broader |
| Chicago | Smart Define. 1970. "grammar systems theory thesaurus" https://smartdefine.org/grammar_systems_theory/thesaurus/broader (accessed September 22, 2026). |
| Harvard | Smart Define 1970, grammar systems theory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/grammar_systems_theory/thesaurus/broader>. |
| MLA | Smart Define. "grammar systems theory thesaurus" 1 January 1970. Web. 22 September 2026. <https://smartdefine.org/grammar_systems_theory/thesaurus/broader> |