| APA | Smart Define. (1970). ray propagation thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/ray_propagation/thesaurus/related |
| Chicago | Smart Define. 1970. "ray propagation thesaurus" https://smartdefine.org/ray_propagation/thesaurus/related (accessed September 22, 2026). |
| Harvard | Smart Define 1970, ray propagation thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/ray_propagation/thesaurus/related>. |
| MLA | Smart Define. "ray propagation thesaurus" 1 January 1970. Web. 22 September 2026. <https://smartdefine.org/ray_propagation/thesaurus/related> |