The company where you can buy research paper https://essayservice.com/buy-research-paper does not check the originality of papers submitted at other universities. Therefore, if you are asked to submit an article from another university, you should be sure to cite the source. If your work does not match the database, it is not considered plagiarism. It does not store copies of submitted papers. Instead, it maintains a log of each document. Using this system, it is able to find similar papers and catch students who try to pass off free articles as their own. If you want to use Turnitin to detect plagiarism, be sure to cite the source of the information you are using. Even if you are not aware of whether the source is a reputable website, you should be citing it. The other method of avoiding plagiarism is to write your assignments using your own words. If you can't remember where you got the information, you can paraphrase it, but be sure to include proper citations.