The Elements of Style, 4th ed. by William Strunk, Jr. and E.B. White A concise review with examples of the principles of usage and composition, as well as writing tips.
Finding Your Writer’s Voice, A Guide to Creative Fiction by Thaisa Frank and Dorothy Wall
Word Painting, The Fine Art of Writing Descriptively, Revised Edition by Rebecca McClanahan
Language Making Nature, A Handbook for Writers, Artists, and Thinkers by David Lukas
Wired for Story, The Writers’ Guide to Using Brain Science to Hook Readers from the Very First Sentence by Lisa Cron
Writing Fiction, A Guide to Narrative Craft, 10th Edition, by Janet Burroway with Elizabeth Stuckey-French and Ned Stuckey-French
Self-Editing for Fiction Writers, How to Edit Yourself into Print, 2nd Ed. by Renni Browne & Dave King
Examples of metaphors in literature and pop culture: Examples of metaphors
The Emotion Thesaurus: A Writer’s Guide to Character Expression by Angela Ackerman & Becca Puglisi, 2012 I have found this book to be invaluable for showing rather than telling how a character feels. It’s a handy guide to emotions and the associated body language.
Seven Drafts, Self-Edit Like a Pro from Blank Page to Book by Allison K. Williams
Writing the Novella by Sharon Oard Warner
Crafting the Personal Essay, a Guide for Writing and Publishing Creative Nonfiction by Dinty W. Moore
The Anatomy of Story by John Truby
The Art of Brevity, Crafting the Very Short Story by Grant Faulkner
How to Write a Dynamite Scene Using the Snowflake Method by Randy Ingermanson