| APA | Smart Define. (2015). duck-billed dinosaur thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/duck-billed_dinosaur/thesaurus/broader |
| Chicago | Smart Define. 2015. "duck-billed dinosaur thesaurus" https://smartdefine.org/duck-billed_dinosaur/thesaurus/broader (accessed September 29, 2026). |
| Harvard | Smart Define 2015, duck-billed dinosaur thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/duck-billed_dinosaur/thesaurus/broader>. |
| MLA | Smart Define. "duck-billed dinosaur thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/duck-billed_dinosaur/thesaurus/broader> |