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Sources and attribution
- Project Management Institute (2025). A Guide to the Project Management Body of Knowledge (PMBOK® Guide), Eighth Edition, and The Standard for Project Management. Newtown Square, PA: PMI®. ISBN 9781628258295.
- Association for Project Management (2025). APM Body of Knowledge, 8th edition. Princes Risborough: APM. ISBN 9781913305390.
- IPMA® (2015). Individual Competence Baseline for Project, Programme and Portfolio Management, Version 4.0 (ICB4). Zurich: International Project Management Association. ISBN 978-94-92338-00-6 (print), 978-94-92338-01-3 (pdf). Free PDF from IPMA®: https://ipma.world/ipma-standards-development-programme/icb4/
- Schwaber, K. & Sutherland, J. (2020, November). The 2020 Scrum Guide™. https://scrumguides.org/scrum-guide.html, accessed 27 September 2026. © 2020 Ken Schwaber and Jeff Sutherland; offered under the Creative Commons Attribution Share-Alike licence (CC BY-SA 4.0). Explained here in our own words.
- Project Management Institute (2026). Project Management Professional (PMP®)® Examination Content Outline – 2026 (July 2026 exam update). Newtown Square, PA: PMI®. PDF on pmi.org, accessed 26 September 2026.
- Association for Project Management (2024, version 6 of April 2026). APM Project Management Qualification: Handbook. https://www.apm.org.uk/media/3r4jbodr/apm-project-management-qualification-handbook.pdf, and the PMQ page https://www.apm.org.uk/qualifications-and-training/project-management-qualification/, accessed 26 September 2026.
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