PowerPoint 2007 does not have a tool that creates references, but you can still insert them on a slide and add a reference list to the bottom of the slide using tools that PowerPoint does have.

How to Add Slide Transitions to PowerPoint. Microsoft's slideshow platform, PowerPoint, allows small business personnel to create compelling content in an accessible manner, combine text with ...

PowerPoint slides with Callouts make a presentation more appealing. Here’s how to insert animated, clickable callouts in PowerPoint.