"The One Minute Manager" (Ken Blanchard, Spencer Johnson, 1982)
This is a short book which can be read quickly. However, one can't help feeling being patronised. The language it's annoyingly condescending, the situations are terribly foreseeable and all in all it's not that you're going to find surprisingly new concepts here... but just a load of common sense.
Not that that is bad in itself, and it actually has merit to highlight things that should be the norm: set out goals, praise workers, and reprimand them if required--only using one minute, and do the latest two immediately after things happen, so that the workers understand what is being praised or criticised.
Everyone who aspires to a management position should totally read this book, if only to learn how to avoid being as patronising as the One Minute Manager depicted in the stories!