“On Writing Well: The Classic Guide to Writing Nonfiction” by William Zinsser is a timeless textbook that focuses on the art of writing nonfiction, specifically in the areas of business and economics. Published by HarperCollins in 2016, this trade paperback book covers style manuals, rhetoric, and business writing. With 336 pages of practical advice and insights, Zinsser’s guide is a must-have for anyone looking to sharpen their writing skills in the realm of nonfiction. The compact size of 8 inches in length, 5.3 inches in width, and 8.6 ounces in weight makes it convenient to carry and reference on the go.