Policy Compliance refers to adhering to internal organizational mandates, such as "company standards." Standards Compliance ensures deliverables meet established external technical benchmarks, directly addressing the "quality of the industry standard." Governmental Compliance specifically addresses adherence to statutory "laws" (federal or state), such as health and safety acts. Regulatory Compliance involves following specific codes and rules enforced by regulatory bodies; "industry codes" (like building or electrical codes) are the primary example of this category.

Project Management Institute (PMI). (2021). A Guide to the Project Management Body of Knowledge (PMBOK® Guide) – Seventh Edition. Newtown Square, PA: Author. (See Section 2.3.2 regarding the external environment, distinct regulations, and standards).

Project Management Institute (PMI). (2017). A Guide to the Project Management Body of Knowledge (PMBOK® Guide) – Sixth Edition. Newtown Square, PA: Author. (See Section 2.1.1.2: Enterprise Environmental Factors - differentiating between governmental standards, industry standards, and internal policies).

Heldman, K. (2018). PMP: Project Management Professional Exam Study Guide. 9th Edition. Sybex. (Chapter 1 details the differences between Regulations [Mandatory] and Standards [Voluntary/Quality guidelines]).