Government Auditing Standards - GAO"Government Auditing Standards (the "Yellow Book") contains standards for audits of government organizations, programs, activities, & functions, and of government assistance received by contractors, nonprofit organizations, & other nongovernment organizations. ... generally accepted government auditing standards (GAGAS), are to be followed by auditors & audit organizations when required by law, regulation, agreement, contract, or policy." Includes standards, exposure drafts, & related guidance.