It is again optional to include the details of your references or not on the CV.
If you do include references details, give a minimum of two references. Provide the references of your recent workplace or education contact details. For example state the name of company, name of contact person/department/title and contact details (email or phone).
If not you can write, ‘reference are provided upon request’. Since most hiring companies have their own rules of standard policy of reference request. For example, during the interview stage or offer stage, you will need to complete a document/form that entails the potential employer permission to contact your references you provided.