Since the bilateral agreement became effective 1 December 2006, the book publishers have not developed a training book that covers the forty questions the FAA has established for the exam(s).
The FAA established a 40 question exam for each level - Private, Commercial, IFR, and ATPL. Transport Canada has established a 20 question exam for each respective licence.
So, until then, you'll just have to broadly cover the subject material and hope it's sufficient to pass the appropriate exam.