| APA | Smart Define. (1970). northeast china plain thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/northeast_china_plain/thesaurus/broader |
| Chicago | Smart Define. 1970. "northeast china plain thesaurus" https://smartdefine.org/northeast_china_plain/thesaurus/broader (accessed September 23, 2026). |
| Harvard | Smart Define 1970, northeast china plain thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/northeast_china_plain/thesaurus/broader>. |
| MLA | Smart Define. "northeast china plain thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/northeast_china_plain/thesaurus/broader> |