| title | ISBN-13 (ISBN-10) | year of publication | 
|---|---|---|
| PMBOK Guide and PMP Exam Prep Book 2018-2019: Study Guide on the Project Management Body of Knowledge with Practice Test Questions for the Project Management Professional Exam by Robert P. Nathan | 978-O-692-15747-3 (O-692-15747-6) | 2018 | 
R.N. · R. Nathan · R. P. · Robert N. · Robert Nathan · Robert P.