Easy Footnotes by Jason Yingling — a WordPress plugin for creating endnotes or a reference list.
If any of you write chapters (lessons) that need end notes (that is, a reference list like you see at the end of chapters in textbooks), you probably know how tedious the process can be. It gets truly onerous when you have to insert a new note somewhere and then reorder the whole list. To solve this, I searched for and found something that I like very much. I am not affiliated with the author in any way (except as a user) and I have sent a donation to express my appreciation. I also use Zotero — a bibliography management utility — to drag and drop my reference notes to wherever I want my note to appear.