When using information from another source you must give credit to the original author or you are plagiarizing. You give credit by citing the source. Make sure your citation contains everything you would need to backtrack and find the information again. It is best to pick one citation style and be consistent.
Plagiarism, whether you copy a paragraph from a book or cut and paste someone else's words from an e-mail, is a violation of Penn State's academic integrity policy.
Penn State resources related to Academic Integrity.