Welcome to WebmasterWorld Guest from 18.104.22.168
Forum Moderators: not2easy
*** The Chicago Manual of Style
I think those two pretty much nail it for a US audience.
There are several other less well known ".... Manual of Style" titles for other audiences.
I forget the name of the one that Oxford? or Cambridge? Press did a while ago.
Not only that, but like all good reference materials, it's a jolly good read in its own right.