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.

Put References or cite Sources in PowerPoint 1] In-text Citation You can manually add references to the presentation slides’ text which is called In-text Citation.

How to Add a New Slide to PowerPoint. Microsoft's PowerPoint application can be an invaluable tool for creating business presentations to pitch new clients or to use as a visual aid in meetings ...

Learn how to insert a watermark in Microsoft PowerPoint presentations. You can add a Draft text or an image watermark using the Slide Master.