The examples in this guide provide an over view of the author-date system as they may appear in a references page. Each example includes a reference list entry and corresponding in-text citation. For the sake of consistency, text citations are presented in parentheses below the diagrammed image of the citation example. The examples are meant to be illustrative and do not encompass every possible situation. If you have questions about citing particular types of sources or dealing with particular situations, you should consult the Chicago Manual of Style, 17th ed. located at the Research and Info Desk in Reed Library or contact a librarian, in person or via chat.
Scientific Style and Format
by
For online resources in the CSE 8th Edition, the URL is a required element, but the DOI is optional. However, if a DOI exists, it would be useful to include because it makes the resource easier to locate.
Journal titles must be abbreviated in citations in CSE style. Rules for journal abbreviation are complex and the correct abbreviation is not always obvious. The List of Title Word Abbreviations is searchable database of words commonly found in titles and their correct abbreviations. Additionally, a list of journal titles and their abbreviations may be found at ISI Web of Science. In the example below, the abbreviated form of the journal title Journal of Clinical Investigation is used.
Note: When citing an online article from a journal, there will be no spaces from the semicolon after "Date Accessed" through the "Pages." To see the final citation without spaces, check the Sample References Page.
In-text citation
(Devakumar et al. 2020)
In-text citation
(Hempel 2018)
In this example citation, the website has a copyright date in lieu of a publication date, as no publication date was provided.
In-text citation
(Massachusetts Herpetological 2017)
In-text citation
(Martins et al. 2014)
In-text citation
(Hassan et al. 2020)
In-text citation
(Kenneally 2020)
In-text citation
(Mason and Uchanski 2020)
* This work is cited with an organization as its author, an abbreviation is provided immediately prior to the citation indicating how the work's name will appear when cited in-text.
In-text citation
(WHO 2019)
In-text citation
(Burnell 2015)
In-text citation
(Matute et al. 2021)
In-text citation
(Hedde et al. 2020)