There are several different citation styles and it can be confusing! You may need to use several different styles throughout a semester depending on the discipline of your course and/or the wishes of your professor. Look in your course syllabus or ask the professor for the required citation style.
There are many resources available for creating bibliographic citations, in-text citations, and paper formatting for particular styles. If you have any questions concerning citation styles, do not hesitate to contact your RIT subject librarian for help!