 When you begin a research project and anticipate needing to refer to more than 50 books, journals, reports or other materials, how will you keep track? Reference management tools, that's how. Reference management tools allow you to collect, store and manage references in one location. Using a reference management tool, you can then insert in-text references in your document and generate reference lists according to your selected citation style. You may also be able to search databases within the program, save and annotate PDFs and share and collaborate with other users. Sounds useful, doesn't it? Through CDU, you have access to EndNote, a commercial software package. The CDU library supports the use of EndNote through training and individual support. EndNote is useful if you anticipate creating a very large reference library as there is unlimited storage. EndNote is not compatible with the Linux operating system. Mendele and Zotero are two other popular tools that are free to download from the internet and are compatible with most popular operating systems. Being free means they have limited storage, though this may not be a problem for you. Which program you choose depends on which functions are most important to you. Go to the CDU library referencing guide for more information.