Citation management software, aka bibliographic management, can make life easier for you. What these software programs do is they help you in organizing your citations, writing your citations, and saving citations for future reference. Most of these programs are very similar. Also, if you start by using one and decide later you would like to use another, most of them use the same file extensions so that transfer between the various programs is simple. Of the three mentioned below, 2 of them are free, and the third one is free for students and faculty at ISU, while you are here.
Here are a few comparisons of different citation management programs:
Three popular programs: