Joseph Williams (1990), Style: Toward Clarity and Grace (Chicago: University of Chicago: 0226899152).
Recommended
Most books on how to write better English are pretty near to useless. Many of them scare you into worrying that you might use "which" when you should use "that" (never mind that an extra "which" never caused any reader the smallest bit of confusion). Others demand that you strive for "clarity" or "brevity" or "coherence"--but then somehow never provide any useful advice on just how, exactly, to do so.
Joseph Williams's Style: Toward Clarity and Grace is an exception. It is the only truly useful book on English prose style that I have ever found. Even Strunk and White cannot compete with the quality of the advice that Williams gives. Perhaps more important, the advice that Williams gives can be used. As Williams puts it, his aim is to go "beyond platitudes." Advice like "'Be clear' is like telling me to 'Hit the ball squarely.' I know that. What I don't know is how to do it." Williams tells us how to do it.
Williams's advice is particularly useful because it is reader-based. Most books on style are rule-based: follow these rules and you will be a good writer. Williams recognizes that clear writing is writing that makes the reader feel clear about what he or she is reading. This difference in orientation makes Williams's advice much more profound: he has a theory of why the rules are what they are (and what to do when the rules conflict) that books that focus on rules alone lack...
Brad DeLong