The PMP Exam: How to Pass on Your First Try, Sixth Edition (Author: Andy Crowe)Rita Mulcahy’s PMP Exam Prep BookHead First PMP: A Learner’s Companion to Passing the Project Management Professional Exam, 4th Edition (Author: Jennifer Greene and Andrew Stellman)PMP Exam Prep Simplified (Author: Andrew Ramdayal)PMP Exam Prep book by Master of Project Academy (Author: Resit Gulec, PMP)All-in-One PMP Exam Prep Kit (Author: Darron L. Clark, PMP)PMBoK – Project Management Body of Knowledge, 6th Edition