How to cite software used to produce data/images? I have made a building model in an energy simulation software tool. I have taken a screenshot from this model and I want to publish it in my thesis. I'm not sure if citing the software is necessary or not. The software is not merely used as a drawing tool, but also as the calculator of the energy requirements of the building. I would like to ask for an example of how such images need to be cited. Thanks in advance.
Some software may have citation requests in their web-pages. The following are a few examples


Matplotlib: Hunter, John D. "Matplotlib: A 2D graphics environment." Computing In Science &amp; Engineering 9.3 (2007): 90-95.
MATLAB: MATLAB &lt;version&gt; and &lt;toolbox&gt;, The MathWorks, Inc., Natick, Massachusetts, United States (&lt;year&gt;).
Origin: Origin (OriginLab, Northampton, MA)


Otherwise, you may adopt the following format:


  Software [version], Company, Year, Link, Last visited: Date.


Also bear it mind that you may not need to cite the software used for image production unless the software itself produces some data used for scientific inference in your work (as mentioned by @DSVA's comments).