To cite or make reference to other people's texts is central to all academic writing.
Check the Library’s list of guides to some of the more frequently used referencing styles:
Guides to the style of references according to IEEE among others are in the list and below is also a shortcut to Chalmers University of Technology guide:
Also, check out the Library's tutorial Cite right - concerning academic integrity. You can learn more there about why and how to cite and how to avoid plagiarism:
While you are writing you will soon realize that the number of references needing to be kept in order is steadily growing. A big help with this is reference management software. First it helps you gather and organize your references. You can then integrate the managed references with your MS Word essay text document so that you can pick up each reference automatically while you write.