My top three books on strategy are the following:
1. Design to Grow: How Coca-Cola Learned to Combine Scale and Agility (and How You Can Too)-David Butler and Linda Tischler. Really great read on how Coca- Cola manages to be a brand that proliferates to the most remote locations in the world. I go back to this book once every year for perspective.
2. Playing to Win: How Strategy Really Works- AG Lafley and Roger L Martin. Insights from the former boss of Procter and Gamble leading the complexity of the FMCG industry.
3. The Lean Start up- Eric Ries. Perspective of strategy in the start up world.
Have a read and curious to know your perspective on them in the future!