To insert:
1. Superscript numbers:
Get to the point in your text where you want to refer to another person’s idea, click on the References tab, then click the Insert Footnote icon and MS Word will allocate that citation a superscript number.
2. Footnotes:
MS Word will have duplicated the allocated superscript number at the bottom of the page and will have placed your cursor after it. All you have to do is enter the details in a footnote format.