DOI can be used for quotation or connection with electronic documents. DOI consists of alpha-numeric strings assigned to documents by the publisher at the onset of electronic publishing and is unique. The assigned DOI can not be changed. Therefore it is a tool suitable for quotation, especially for articles that of which the bibliography is not ready and on publishing process.

An accurte example of a DOI for the Ahlâk Journal is (internet adress format)

When DOI is used for linking to a document on the internet, this identifier does not change.