APA (7th ed.) Citation
Csapó, B., & Funke, J. (2017). <The> nature of problem solving: Using research to inspire 21st century learning. OECD.
Chicago Style (17th ed.) Citation
Csapó, Benő, and Joachim Funke. <The> Nature of Problem Solving: Using Research to Inspire 21st Century Learning. Paris: OECD, 2017.
MLA (9th ed.) Citation
Csapó, Benő, and Joachim Funke. <The> Nature of Problem Solving: Using Research to Inspire 21st Century Learning. OECD, 2017.
Warning: These citations may not always be 100% accurate.