when do you use the phrase sic
In a term paper, thesis, or dissertation, always: (1) Use [sic] in a quote if it is not your mistake. Furthermore, the word sic should be italicized within the brackets. If you have to use [sic] in several quotes throughout your paper, then the authors of those works should not be used for academic papers. You should limit your usuage of [sic]; however, it is not obnoxious in such papers.