Clinical Psychology PhD - All Academic?

[Sara1094]

I have noticed that some Clinical Psychology PhD programs say to include three recommendation letters from academic persons. I planned on including two professors from my undergrad and my boss who is a neuropsychologist with a PhD in Clinical Psychology. I cannot imagine not including my boss who I have worked for doing cognitive testing and clinical interviews, all work very relevant to entering a clinical program. Would he be included in the academic persons category? Should I include his letter regardless? Please help! Thanks in advance!