I was able to find the correct file path for my Mac.
~/Library/Group Containers/UBF8T346G9.Office/User Content/Citations
I found the file path by opening word then going to the menu "Word > Preferences > File Locations" In there it listed the file path for User templates which showed me where Office 2016 was installed.
~/Library/Group Containers/UBF8T346G9.Office/User Content/Citations
I found the file path by opening word then going to the menu "Word > Preferences > File Locations" In there it listed the file path for User templates which showed me where Office 2016 was installed.