Reference styles describe which information should be included in the in-text sources and the reference list and in which order of the information should be presented. They are usually divided into three main types:
-Parenthetical or author-year (e.g. APA)
- Numbered (e.g. Vancouver)
-Footnotes (e.g. Oxford)
Different subjects use different styles and to know which one to use you should check with your lecturer or supervisor.