Whether you are making a speech to your county commissioners, sharing a slide presentation in an elementary school, or writing a letter to the editor, you should be citing your sources. Citations are evidence that you have done research and help your audience find the resources you used. Failure to cite sources is plagiarism.
Zotero and Mendeley are citation managers. These tools save your citations, insert them into Word documents, and create bibliographies in APA, MLA and other formats