If you need to add references to sources in your plan, there are several options to consider:
Adding citations in-line:
The simplest method (and the method that works entirely within LivePlan) is to add parenthetical citations within your text blocks. URLs can be added here as well, using the link builder tool:
You may also want to add a custom topic to your plan outline that serves as a bibliography or "cited works" list.
You can also add a custom topic for endnotes within LivePlan. The text formatting options within LivePlan allow you to present these notes in the same text size as the main text, and if you wish, they can be italicized or bolded.
If you'd like different endnote formatting, you can always export your plan as a Word document and update the formatting in Word. If you need live links in your sources, you can also add these in Word.
To add footnotes to your plan, you can export your plan as a Word document and then use Word's built-in footnote-creation feature to build your citations.
Notes can be added directly to LivePlan's forecast tab. Practically any forecast item, and any cell within the forecast, can use this feature to add citations.