Should I use APA Format?
If you are in a class or any of the following subjects are your major, you should probably use APA format:
What is a DOI?
DOI stands for Digital Object Identifier. It is a persistent, unique number that identifies a piece of online or digital information, such as a journal article, a chapter in an online book, a data set, a map, and so on. Students most often encounter DOIs when they're citing journal articles. Keep in mind that not every journal article will have a DOI assigned to it! Look for the DOI on the first page of the article, either at the top or bottom. You need to include them in your citation as they are very helpful when trying to locate the article later.
If you don't see the DOI:
Search for the article to find the article's DOI.
A citation management system can help you organize, manage, and annotate your references when working on projects or assignments. Below are some examples.
Note: There are free versions of the below-mentioned citation management systems.