This was published by Sun Technical Publications, which was part of Sun Microsystems. The style is easy to read and clear, not too dry and never frivolous. The book gives clear examples and labels them "correct" and "incorrect" to help the reader. I have used this book for about 18 months and it has served me well. Some unique topics in this book include legal guidelines for protecting copyrights and trademarks, and a description of different types of technical documentation. This is a very good style guide, but I wonder about its future, since Oracle's purchase of Sun Microsystems was completed a few months after this edition was published. Also, as another reviewer mentioned, the print in the book is less than ideal and sometimes a bit fuzzy. I knocked off one star for that.