My references' contact details are on my CV. My reasoning is that I don't send out CV's speculatively, but only when I'm applying for a specific job (if I did show my CV to someone for some other purpose, I'd take the references out.) When I fill out job application forms, I routinely include my references' details, so I don't see CV's in application for a specific position as being any different. The vast majority of positions are going to ask me for references at some point in the process so I might as well give it to them up front!