PMP Exam Prep, Sixth Edition: Rita's Course in a Book for Passing the PMP Exam

Hundreds of thousands of project managers understand why PMP Exam Prep by Rita Mulcahy, PMP, is a worldwide best-seller. Is it Rita's years of PMP exam preparation experience? The endless hours of ongoing research? The interviews with project managers who failed the exam, to identify gaps in their knowledge? Or is it the razor-sharp focus on making sure project managers don't waste a single minute of their time studying any more than they absolutely have to? Actually, it's all of the above.