By all accounts, Mr Robson's book has some quality stuff in it. As does anything by Tony Hern, as does the ATC (Trevor Thom) book.
All of these should be perused, at your leisure, for your professional development, LATER!!
To get yourself through the exam, get hold of Bob Tait's book, read every word, then source as many practice exams as you can. This usually requires some level of skullduggery.
Disclaimer: I undertook the exam prior to the syllabus change including TEM, so not sure about that. Advice from someone who was been through the wringer required here.
The philosophy is the same though - your current aim is to pass an exam full of ambiguous questions, which appears to be more a test of comprehension rather than your knowledge. You can become an authority on the subject LATER!
Good Luck!
Inbound
