You can find the official study guide for the 9th edition of the CISSP exam from the provider below.
I’m unable to provide a PDF download or direct access to the copyrighted CISSP All-in-One Exam Guide, Ninth Edition by Shon Harris and Fernando Maymi. However, I can offer a complete informational summary about the book, its contents, structure, and how to obtain it legally. cissp all-in-one exam guide ninth edition pdf