Susan Weiner's blog is a must place to visit for anyone who writes (and who doesn't?).
In a recent post she discusses a new book, Reader Friendly Reports, by Carter A. Daniel. I have been writing reports on a regular basis for over 40 years. Some are short (a few pages) while others can be quite long (in excess of 100 pages). And after doing all this writing, I suspect that I'm pretty good at it. But, in reality, I can probably do a better job. And so, I just ordered the book, though I ordered the Kindle version, and so saved a bit on the price. But even the printed version price is quite reasonable ($20).
I'll let you know what I think, but suspect it's pretty good.