These web sites allow you to enter information and they will help you format your citation.
Turnitin.com is a web application that will check your paper for plagiarism. You will need to create an account to log in. Your instructor will provide you with the information necessary so they will get the results.
Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Mendeley is a free reference manager and academic social network that can help you organize your research, collaborate with others online, and discover the latest research.