The volume number follows the journal title with no punctuation and is not italicized. The issue number (if it is given) is separated from the volume number with a comma and is preceded by “no.” The year appears in parenthesis after the volume number (or issue number if given). The year may be preceded by a specific date, month, or season if given. Page information follows the year. For notes, page number(s) refer only to the cited material; the bibliography includes the first and last pages of the article.
From the OWL - Prude Writing Lab
A DOI, or digital object identifier, is like a social security number for a document online. It’s a unique and permanent identifier that will take you straight to a document no matter where it’s located on the Internet.
You can Google a DOI to find an article, although you may still have to sift through search results. To go straight to the source, you can also consult a DOI resolver, such as the one supplied by CrossRef.org.
The DOI should be listed prominently on the first page of an article, whether in print or online. If you’re working online, copy and paste it into your reference list, to avoid transcription errors. Do not alter the alphanumeric DOI string in any way.