The King's English, by H.W. Fowler and F.G. Fowler (Oxford, £6.99 in UK)

First compiled in 1906 by the Brothers Fowler, those tireless guardians of correct usage, this reference book remains an intimidatingly correct "Americanisms are foreign words, and should be so treated. To say this is not to insult the American language" and engaging work. With entries on logic and rhetoric, malapropisms and misplacement, it is a complete guide. The preface politely states, "it is notorious that English writers seldom look into a grammar or composition book", leaving the reader to ponder his or her multiple offences against the language. Only the foolhardy or grammatically super-adroit could dare ignore The King's English - pity about the title, though.