DOI-URL Menu Comments
Online Sources - Online sources should always contain 'Retrieved from' and a URL at the end of the reference if no doi is available.
DOI - All sources should include the doi if available.
DOI Format - The DOI label should be in all lower case (e.g., doi).
Print Books - For electronic version of print books the version should be indicated in brackets immediately following the title inside the period of the title element.
URL - The URL for electronic books should link directly to the book.
No DOI for Article
No DOI for Article - When no DOI is available for electronically obtained journal, magazine, or newspaper articles the URL for the journal, magazine, or newspaper should be used in lieu of the doi preceded by the words 'Retrieved from: '.