xbFootnoteTag is a package, containing an editor button plugin and a content plugin, which insert footnotes into an article. The footnote content can be taken from a Joomla tag, allowing citations and references to easily be used across multiple articles, or simple text can be entered directly for one-off use.

As well as displaying as a conventional footnote (using a sequence number, or citation title as the link) the content can also be displayed as a Bootstrap popover. This is less convenient if you wish to print the article, but in a hypertext document makes the content immediately available to the reader without having to look to the end of the article (or back of the book).

The shortcode {xbref...} inserted in the editor can be hidden in the WYSIWYG edit view to reduce clutter, or highlighted to make it easy to pick out when editing without impacting the front-end display.

Tag descriptions are used for the body of the footnote and can be formatted in whatever way you wish (eg APA style). Organising your references as tags under a parent tag "References" makes it easy to have all predefined references available for selection by the editor button.

Tags can also be used for definitions, or other content that you might wish to present as either a popover or as a footnote. eg to show a thumbnail picture of an individual when the user hovers the pointer over their name, or the expansion of an acronym used in the article text.

Read more http://feeds.joomla.org/~r/JoomlaExtensions/~3/XecioNHmR1U/xbfootnotetag