The Chicago Manual of Style has always been a steady companion. It discusses every imaginable style question to the point of exhaustion and speaks with the authority of the nation's largest academic press and the country's most academically serious university. The University of Chicago Press is not burdened by the scholarly dubiousness that plagues the MLA, which happens to publish a competing style guide.This edition of the Manual of Style includes a number of improvements and additions. The Chicago manual has finally spoken on citing electronic publications, and even includes advice on assembling manuscripts for electronic journals. Flow charts in the back give broad overviews of the publishing process. The index seems easier to use than the index in the last edition, and the chapters are arranged more thoughtfully. Most striking upon first picking up the 15th edition is its stunning graphic design--not only is it beautiful, but it helps readability by highlighting examples and making sections easier to find. The manual includes some information on editing foreign-language publications. As always, the manual includes some very subtle humor in its sentence structure, verbiage, and choice of examples.
The Chicago Manual of Style is also equiped to be an arbiter of many a college dining hall argument on language, with extensive chapters on grammar and usage.
I heartily recommend the Chicago Manual of Style to anyone who ever finds himself with a question on some detail of English style.