Some further reading.
Superscripts:
https://www.mobileread.com/forums/sho...d.php?t=102455
Mobi Tags:
http://www.mobipocket.com/dev/articl...TagRef_OEB.htm
Based on the list of supported tags maybe you can use something like:
Code:
<a..><sup><small>1</small></sup></a>
Edit - tested this a bit too, <small> doesn't work but that epub linked below shows you a variety of different superscript styles, some convert to mobi better than others...
You can also apply your own styles to the <sup> tags in the epub to precisely control your styling in the epub, recognizing that it's not going to be quite as good in the mobi. Check this post:
https://www.mobileread.com/forums/sho...0&postcount=70