Uncertified copies or provisional versions of transcripts should be uploaded to your self-service account. Originals or certified copies should be sent to the Graduate Admissions Office.These systems work by generating a web address for your electronic transcript on a trusted website, or a secure access token, which either you or your institution can notify us of, by sending a message via the system to email@example.com.
All applicants will need to provide the details of two referees who can provide academic references written in English.One reference should be from your current, or most recent, academic supervisor(http://www.graduate.study.cam.ac.uk/how-do-i-apply/supporting-documentation/academic-references)
Personal Reference :
This is only required if you are applying for the Gates Cambridge Scholarship.(https://www.gatescambridge.org/apply/how-apply/personal-reference)