Chicago 18 (Author-Date) Treaty Citation Generator

Citing a treaty (international convention or multilateral agreement) under the Chicago Manual of Style (Author-Date System) framework requires combining Chicago Manual of Style (author-date)'s punctuation hierarchy with the specific metadata of the source. To construct a compliant entry, researchers must collect the official treaty title, participating signatory states (if bilateral), exact date of signature or entry into force, treaty series volume/citation (e.g., U.N.T.S.), and URL. In the body of your paper, Chicago Manual of Style (author-date) utilizes parenthetical author-year citations with no comma between the author and year, e.g., (Author Year, page), which links directly to an entry organized in alphabetical by author family name and chronological by publication year.

When formatting a treaty in Chicago Manual of Style (author-date), pay close attention to contributor names and capitalization. Specifically, Chicago Manual of Style (author-date) enforces inverting only the first author name (Last, First) while writing subsequent co-authors in normal order (First Last) connected by the word "and", and applies headline-style Title Case for all titles, placing analytical works in quotation marks and standalone containers in italics. Chicago Author-Date places the year immediately after the author without parentheses in the reference list, and spells out first names rather than reducing them to initials. Furthermore, if your treaty does not display an individual creator, the rule is straightforward: international treaties never use personal authors; begin the reference directly with the official title of the convention or treaty.

For digital and online treaty references, Chicago Manual of Style (author-date) stipulates placing the DOI (https://doi.org/...) or stable URL at the very end of the entry, requiring an access date only when no publication date exists. Include the United Nations Treaty Series (U.N.T.S.) volume and page number whenever available to satisfy Bluebook and international law standards. Using the client-side Chicago Manual of Style (author-date) Treaty generator below, you can automatically parse URLs, DOIs, or ISBNs and apply these exact Citation Style Language (CSL) rules locally in your browser with zero server tracking.