PMP® Question Bank - 400 PMP®P Exam Sample Questions
M. Fahad Usmani
The SAGE Handbook of Qualitative Data Collection
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PMP® in Depth: Project Management Professional Certification ...
Paul Sanghera
Interviewing as Qualitative Research: A Guide for Researchers ...
Irving Seidman
Agile Business: A Leader’s Guide to Harnessing Complexity
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Investment- und Risikomanagement: Modelle, Methoden, Anwendungen
Peter Albrecht & Raimond Maurer