Requested *contact information of two references* in application for a PhD
You have to supply the contact information.
So:
Address (postal)
Email address
Telephone number(s) landline definitely, mobile not always
This is so that the admissions / adjudicating committee can get a reference according to their policy. That could be a 5 minute chat or asking the referee for a personal letter, or sending the referee a particular form to be completed.
Whatever they want, you need to supply the contact information. Be sure that if you don't then it will negatively affect your application, even to the point that it gets binned immediately. They have too many to waste time coming back to you &quot;oh, you forgot the contact info for 2 referees&quot;...