A master's thesis can quote many interview contents. As long as the content is reliable and the source is clear. So it is possible to only use the interview method in the paper.

Interview, also known as interview, refers to the basic psychological research method of understanding the psychology and behavior of the interviewee through face-to-face conversation between the interviewer and the interviewee. Because of the different nature, purpose or object of research, interview methods have different forms. According to the standardization of interview process, it can be divided into structured interview and unstructured interview. Interview method is widely used, and it can simply collect all kinds of job analysis data, so it is favored by people.