The AMA Handbook of Project Management
Jeannette Cabanis-Brewin & Paul C. Dinsmore
PMP® - PMBOK® Guide – Sixth Edition – Classroom Test Paper
simplilearn
Agile Software Development With Scrum
Ken Schwaber & Mike Beedle
101 Most Popular Excel Formulas
Bryan Hong & John Michaloudis
SCRUMstudy-SBOK-G[..]
Edusys
Scrum in Action
Andrew Pham & Phuong van Pham