Aaron Gustafson, Tantek Çelik, Derek Featherstone
Published by: O'Reilly Media in March 2006
Of course this isn't the kind of book you would read cover to cover ... but probably together with this book is really all you need on your reference shelf. The third edition (don't bother with earlier ones if you are offered second hand!), is comprehensive in it's scope. You will even learn about doctype swithching to help deliver to earlier browsers.
Amazon have the author wrong -- it should be: Jennifer Niederst.