Best NANDA nursing diagnosis book for CPNE

[Medic-to-rn]

I am a active paramedic in high volume EMS division and have worked in CCT and the ED. I have finished all my classes for the excelsior college Paramedic to RN bridge and now just have to take the CPNE. I am solid on medical knowledge but taking and passing the CPNE seems like a totally different monster in it self. Any recommendation on the best NANDA Nursing Diagnosis book to buy and use for the test.

More and more I wish I would have done a traditional school but now I am through and just need to finish so any help would be grateful.

Thanks