I am doing an english essay. Do I add reference/citation on an abstract?

6 answers

Definitely, yes.

APA or MLA guidelines?
And how I love the Chicago Style manual.
Yes!

https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_style_introduction.html
This URL is for APA, but look down and you'll find links to other — whichever one you need. Follow directions.
i'm doing IEEE referance
See IEEE in the list on the left in that website I linked above. All your directions will be there.
ok thanks