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The new (6th) edition of APA asks for the DOI (Digital Object Identifier), if available, for citations for electronic journal articles. Note that a DOI does not always exist for an online article. If the article has one, it can sometimes be found in the database entry (but not always) or is often included with the Journal Name at either the top or bottom of the first page of the article itself.
Alternatively, if you have the citation information, you can look up the DOI number in CrossRef:
If you are working with a large number of citations, you may find it helpful to use an online citation management tool such as RefWorks, EndNote, or Mendeley. There are numerous systems available, each with pros and cons. The UVic Libraries' has created some guides and webpages to get you used to these systems and to compare. However, using a citation management tool is by no means a requirement, many researchers get by quite easily without them.
It is essential to give credit when you use other people's content in your academic work. Your assignments and exams must be your own original work, not someone else's.
"The action or practice of taking someone else's work, idea, etc.,