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.