The best i've found,
This review is from: A Reference Grammar of Modern Standard Arabic (Reference Grammars) (Paperback)
Really good grammar refrerence. It contains everyghing a student should know, with examples, not many, but several.
One bad aspect: The titles and organization of the book is a little confusing. Uses smaller font size for section titles, sometimes, and it's quite difficult to find, while passing by through the pages, the general organization because you can't identify quickly the titles. Just that.
Dedicates a big section of the book to arabic verb forms (I, II, III...).
At least it looks "modern", good paper, and all. I'm bored of old style books and very confusing and small fond size.
Really good, and modern reference grammar.