“Style: Lessons in Clarity and Grace” (any edition is fine), by Joseph M. Williams (ISBN-10: 0-321-47935-1, this is for the 9th edition).
“The Chicago Guide to Grammar, Usage, and Punctuation,” by Bryan A. Garner, The University of Chicago Press (ISBN-10: 0-226-18885-X).
“Diagramming Step by Step: One Hundred and Fifty-Five Steps to Excellence in Sentence Diagramming,” by Eugene Moutoux, Butler Books Louisville (ISBN-10: 978-1-953058-67-6).