Sic is usually found in brackets or parentheses, and it can also be italicized. If you want to quote someone or something in your work, and you notice the source material contains a spelling or grammatical error, you use sic to denote the error by placing it right after the mistake.
How do you use sic in a sentence?
Sic is usually italicized and always surrounded by brackets to indicate that it was not part of the original. Place [sic] right after the error. Example: She wrote, They made there [sic] beds. Note: The correct sentence should have been, They made their beds.