| APA | Smart Define. (1970). Hilbert's paradox of the Grand Hotel thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/hilbert%27s_paradox_of_the_grand_hotel/thesaurus/broader |
| Chicago | Smart Define. 1970. "Hilbert's paradox of the Grand Hotel thesaurus" https://smartdefine.org/hilbert%27s_paradox_of_the_grand_hotel/thesaurus/broader (accessed September 30, 2026). |
| Harvard | Smart Define 1970, Hilbert's paradox of the Grand Hotel thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/hilbert%27s_paradox_of_the_grand_hotel/thesaurus/broader>. |
| MLA | Smart Define. "Hilbert's paradox of the Grand Hotel thesaurus" 1 January 1970. Web. 30 September 2026. <https://smartdefine.org/hilbert%27s_paradox_of_the_grand_hotel/thesaurus/broader> |