I read the second edition, from 1984. A very quick read, I got it done in an afternoon. Nevertheless it provides a lot of food for thought for when conducting a needs analysis. It isn't about how to create training - it is about how to determine when training is necessary. The authors provide a very useful flowchart and walk through it chapter by chapter.
The only aspect that they don't really address, which may be in later editions, concerns people who have performed a job well in the past but the job has changed. This could be due to new policies, new tech, new company culture. The manager requesting training might be unaware that the job requirements have changed and they may need to adjust their expectations. Or the employee may be unaware of or resistant to the new requirements.