Keep in mind the difference between one-shot Citation Tools and Citation Managers.
Databases and Chegg tools (i.e. EasyBib) will create one-shot citations for you to copy and paste.
Citation managers such as Zotero, Mendeley, and RefWorks save your citations in an online account and allow you to place citations into your papers.
EBSCO, ProQuest, JSTOR, and many other databases offer free citations for the resources you find.
Look for the CITE link
Caveat
Chegg tools such as Bibme.org, Easybib.com, and Citationmachine.net have ads.
Key features:
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