Citing own image based on others work Let's say I create an image which illustrates the ideas of others as part of a paper I write for university class work (so it's not about anything I want to publish).

A simple example: Foo Bar says in their paper: We have a state machine with states A, B, and C. 

I want to summarize their idea in my paper, but they do not have a graphic to illustrate it, so I create a graphic for my paper looking like this:

A --&gt; B --&gt; C



Do I need to cite it? My text makes it clear that this is not my idea (and it properly cites Foo Bar), but just looking at the graphic, this isn't clear. 
If so, how would I cite it? Would "Graphic Title (based on [Foo Bar, 2016])" work? Is "based on" strong enough to indicate that this is not a graphic created by Foo Bar or a graphic based on a graphic by Foo Bar? Would "based on work by [Foo Bar]" be better? Or is there some standard for this situation that I'm not aware of?


This question is similar to How to cite a rebuilt graphic, but not a duplicate, as I did not rebuild a graphic, but build a graphic based on a description.
You could add a note to the figure caption as follows:


  Figure X: [figure_caption ...] (This figure is based on work by Foo
  Bar 2016).


In addition to the citation in your text, you can also add a proper citation in this note (using your citation style of choice).