If you are preparing for PMI-RMP or intending to start preparing for it soon, you need to have with you the official PMI's book with you - PMI Standard for Project Risk Management.
To download the free PDF of the book, click the link below
Download Standard for Project Risk Management Free PDF
Also download:
Risk Management: Tricks of the Trade by Rita Mulcahy (The only other popular book you should study besides the PMI Standard for Risk)
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