| APA | Smart Define. (2011). orbit period thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/orbit_period/thesaurus/broader |
| Chicago | Smart Define. 2011. "orbit period thesaurus" https://smartdefine.org/orbit_period/thesaurus/broader (accessed October 2, 2026). |
| Harvard | Smart Define 2011, orbit period thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/orbit_period/thesaurus/broader>. |
| MLA | Smart Define. "orbit period thesaurus" 26 April 2011. Web. 2 October 2026. <https://smartdefine.org/orbit_period/thesaurus/broader> |