Zotero
Zotero is a free reference management software that allows you to easily collect, manage, and organize bibliographic references by interfacing with databases and websites. It also easily creates bibliographies and lets you cite as your write!
Learn more about Zotero at the:
Citing Sources
Ensure that you cite the sources you use in your paper. This allows others to find what you have found and to verify your research, give credit to those authors and avoid plagiarism.