Hello. I am a student of the Salisbury University. From time to time I write essays and articles on my own. I use different sources to write papers. It is difficult for me to concentrate and prepare a whole paper from scratch. I wonder how do plagiarism checkers work https://plagiarismsearch.com/how-plagiarism-checker-work.html Do they professors really use? I do not want my paper to be plagiarised. However, it can happen because I use additional writing sources.