| APA | Smart Define. (2016). at what time or period thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/at_what_time_or_period/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "at what time or period thesaurus" https://smartdefine.org/at_what_time_or_period/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, at what time or period thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/at_what_time_or_period/thesaurus/synonyms>. |
| MLA | Smart Define. "at what time or period thesaurus" 24 February 2016. Web. 23 September 2026. <https://smartdefine.org/at_what_time_or_period/thesaurus/synonyms> |