UK Radiotelephony Manual (CAP 413)
You may well have encountered this one while training, but it is the official word on the subject, at least as far as the UK Authorities are concerned. An updated version is being issued in early November and it will be interesting to see if they have adopted ‘Toping & Tailing’ of Safetycom calls. They do try and keep it relevant to the real world, although listening to almost any working frequency will give the current local variations on the theme.
It has one great advantage over other titles, it's free.