EC-Council – 5 Powerful Phases of Penetration Testing That Reveal Hidden Vulnerabilities

CMMC Level 3 Assessment Guide

Institute for Security and Open Methodologies – The Open Source Security Testing Methodology Manual

NIST SP 800-53A Assessing Security and Privacy Controls in Federal Information Systems and Organizations

Open Web Application Security Project (OWASP) – Testing Guide

The Penetration Testing Execution Standard

NIST SP 800-115 Technical Guide to Information Security Testing and Assessment