1. Uniform format: First, you need to ensure that your references are uniform in format. Different disciplines and publishing houses may have different citation formats, such as APA, MLA, Chicago, etc. You need to choose the appropriate format according to your subject and the requirements of your tutor.
2. Complete information: each reference should contain complete information, including author, publication year, article title, journal name, volume number, issue number and page number. If possible, it should also include DOI or URL.
3. Marking position: References are generally placed at the end of the paper, but the places cited in the paper need to be marked. The way of marking is usually to insert brackets at the quoted places, which contain the information of references.
4. Consistency: Throughout the paper, you need to keep the labeling methods of references consistent. For example, if you use the author year system in your article, then all references should use this format.
5. Update: In the process of writing, you may find new related documents. You should update your bibliography regularly and revise the quotations accordingly.
6. Proofreading: Finally, you need to proofread your bibliography carefully to ensure that all information is accurate and there are no omissions or errors.
Generally speaking, marking references is a process that requires care and patience, but it is very necessary for your final paper.