| APA | Smart Define. (1970). elevations and depressions thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/elevations_and_depressions/thesaurus/synonyms |
| Chicago | Smart Define. 1970. "elevations and depressions thesaurus" https://smartdefine.org/elevations_and_depressions/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 1970, elevations and depressions thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/elevations_and_depressions/thesaurus/synonyms>. |
| MLA | Smart Define. "elevations and depressions thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/elevations_and_depressions/thesaurus/synonyms> |