What is a DOI? Understanding Digital Object Identifiers in Academic References

What is a DOI?

A DOI (Digital Object Identifier) is a unique alphanumeric code assigned to a digital publication, such as a journal article, ebook, or research report. It provides a permanent and reliable link to the online source.

Why DOIs Matter

• Permanent Link: Unlike URLs, DOIs never change, ensuring long-term access.
• Credibility: Used by academic databases and journals for authentic citation.
• Efficiency: Helps readers find digital sources quickly and accurately.

How DOIs Work

Each DOI is registered through an international agency and linked to a specific document. It resolves to the current location of that document when entered in a DOI resolver, such as https://doi.org.

DOI Format Example

Example: 10.1000/xyz123

You can access it by typing: https://doi.org/10.1000/xyz123

Where to Find DOIs

• On the first page of journal articles.
• In database listings (e.g., PubMed, JSTOR).
• In the citation information provided by publishers.

Using DOIs in Citations

APA Example: Smith, J. (2023). Climate policy in urban planning. Journal of Environmental Research, 15(2). https://doi.org/10.1000/xyz123

Final Thoughts

DOIs make academic references more reliable and accessible. Always include them when available—they guarantee that your readers can locate your cited sources accurately and efficiently.