| APA | Smart Define. (1970). perennial woody plant thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/perennial_woody_plant/thesaurus/synonyms |
| Chicago | Smart Define. 1970. "perennial woody plant thesaurus" https://smartdefine.org/perennial_woody_plant/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 1970, perennial woody plant thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/perennial_woody_plant/thesaurus/synonyms>. |
| MLA | Smart Define. "perennial woody plant thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/perennial_woody_plant/thesaurus/synonyms> |