Crediting your sources, in the form of in-text citations (footnotes) and a bibliography at the end of your work is a nonnegotiable in history writing and presentations.  Citations not only allow you to avoid plagiarism- they build a case for the credibility and authority of your sources, and thereby your argument.  

At Penn Charter, you will use Chicago Style in all of your history courses. See the resources below, including the Chicago Manual of Style, for how to create footnotes and a bibliography so you can cite your sources with fluency and ease.