Have used this book in the past and have found it very useful, with excellent examples of conventions of writing mechanics. More thorough than Strunk and White. It is not inexpensive and it does get updated every year or two, so it helps if you can get it from a library when you need it.

My second go-to book when I was a tech editor. The first was Words Into Type.

My second go-to book when I was a tech editor. The first was Words Into Type.