The reference section of your paper contains a list of all of the resources that you cited. Here's some things to keep in mind when creating an IEEE reference list:

• Arrange the list numerically based on the order the citations appeared in your paper.
• Two or more articles by the same author (or authors) are listed chronologically.
• The citation number (in brackets) is aligned along the left margin. The text is typically intended 3 spaces.
• The author(s) name(s) are formatted so the first names’  initials are placed first  followed by last names.
• The resource title is typed in italics. The first letter of each word in the title is capitalized. 

Example of a reference list utilizing various types of resources:

Citations for Journal Articles

Citations for Print Books

Citations for Websites, Email, etc.

Example is provided by the IEEE Reference Guide