Sorry I can't figured out only one! But there is my top!
The Green King - by Paul-Loup Sulitzer
The Prince - by Niccolo Machiavelli
Debt: The First 5000 Years - by David Graeber
Misbehaving: The Making of Behavioral Economics - by Richard Thaler
Nudge - by Richard Thaler
Theory of Constraints - Eliyahu M. Goldratt