Yea, you have to have three references but only one internal LOR. They say a internal LOR will get your app looked at and scored but not an interview. The VP also told me to be careful with who writes your LOR because that is also weighted as well. The VP said to me if you have a LOR from a guy that also referred five other guys and they failed the interview, then they are not as likely to call you for an interview now. So I would not recommend just any LOR either but you do need at least one. Another option is to attend a job fair since that will get your app reviewed and scored too.