I will be starting my RPN (after graduating from university) in September, and always had a nack for picking the right books. I have no idea if the following are actually used by actual practicing nurses, these are simply books that "in theory" nurses should use in my opnion.
Here you go
4th edition - By Chabner - Really good, if you work thorough it.
-All of Mosby's "Notecards" - Really good reference guides you can tear them out and use them as flashcards, durable too.
-Clinical Nursing Pocket Guide by Marilynn and Lee Jackson seems good. Very concise; the tabs are really useful.
- Nurse's 5-Minute Clinical Consult - I bought this and seems excellent so far, probably will hang on to it.
- The nursing barchart is really good too: 1572224932