Citation management tools are tools that help you organize, manage, and cite the sources that you've found during your research. They can be great for so many things:

• Keeping track of those articles you found.
• Letting you search for a source that you've found by whatever criteria you'd like.
• Keeping annotations and notes about those articles.
• Allowing you to group articles by whatever you'd like.
• Automatically creating citations and bibliographies in your preferred style (yes, that includes APA 6th)