Waddington, C. H. (1977). Tools for thought: How to understand and apply the latest scientific techniques of problem solving. Illustr. by Yolanda Sonnabend. Basic Books.
Chicago-Zitierstil (17. Ausg.)Waddington, Conrad H. Tools for Thought: How to Understand and Apply the Latest Scientific Techniques of Problem Solving. Illustr. by Yolanda Sonnabend. New York: Basic Books, 1977.
MLA-Zitierstil (9. Ausg.)Waddington, Conrad H. Tools for Thought: How to Understand and Apply the Latest Scientific Techniques of Problem Solving. Illustr. by Yolanda Sonnabend. Basic Books, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.