One of the most crucial elements of academic research is properly citing sources. In APA, writers must use all sources from the reference list in the text and list all in-text sources in the reference list. Additionally, writers must include essential elements in each reference entry to ensure complete source information. Of significance is including proper retrieval information for all online sources. This information includes either a DOI number or a retrieval URL if the source lacks a DOI. A DOI, or digital object identifier, helps researchers easily find and access registered articles.
The most common agency that registers articles with doi numbers is CrossRef. The CrossRef database (https://www.crossref.org) helps researchers find articles and missing reference information. For example, if a researcher forgets to include the retrieval information of online sources while conducting and recording research, then he or she can search the CrossRef database for that information. To search the database, simply copy and paste the title of the article into the “Search Metadata” feature on the homepage of CrossRef. If an article has a DOI number, it appears in the first few search results. The database also identifies the author name(s) date, and volume and page numbers, in addition to the doi number.
Schedule a time to speak with an expert using the link below.
While searching for missing doi numbers in CrossRef, there are two formats that may appear with the article: (a) doi:10.1037/rmh0000008, or (b) http://dx.doi.org/10.1037/rmh0000008. Both formats are acceptable, but the HTTP link is easier to copy and search, so use it when possible. Do not mix formats, such as doi:http://dx.doi.org/10.1037/rmh0000008, as this is incorrect.
The CrossRef database is a great resource to use when conducting research and when polishing up the reference list. Use this free database to find missing retrieval information and ensure your reference list meets all APA requirements.