Organisation for Economic Co-operation and Development. (2017). The nature of problem solving: Using research to inspire 21st century learning. OECD.
Цитирование в стиле Чикаго (17-е изд.)Organisation for Economic Co-operation and Development. The Nature of Problem Solving: Using Research to Inspire 21st Century Learning. Paris: OECD, 2017.
Цитирование MLA (9-е изд.)Organisation for Economic Co-operation and Development. The Nature of Problem Solving: Using Research to Inspire 21st Century Learning. OECD, 2017.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.