Your citation will depend on the type of resource you are using (book, periodical, website, tweet, blog, etc.). Make sure you know which format (MLA, APA, Chicago/CMOS) that is required for your paper. If the assignment does not state it, check your syllabus or ask your instructor.
You can find citation creators, examples, sample papers, and tips on the library’s citation guide: http://tstc.libguides.com/citation.