There are words that some genealogists get confused. Cite and site are two of them–we’ve just thrown sight in for fun.
To cite means to indicate the source of some material and to indicate that source in a way that others can locate the material that was used.
The site is a location where something is or where something took place.
And of course, sight means to see something.
So if you use a cemetery as your source and you visit it yourself, you have used your sight to cite the site.