Chicago Manual of Style (though it says 1 to 100, er, I mean one to one-hundred).
I try to use a CMOS subset for my professional/technical writing, mostly for consistency, but, partly so that I don't need to argue with people with subjective opinions about how I'm writing it wrong.
Chicago Manual of Style (though it says 1 to 100, er, I mean one to one-hundred). I try to use a CMOS subset for my professional/technical writing, mostly for consistency, but, partly so that I don't need to argue with people with subjective opinions about how I'm writing it wrong.