“On Writing Well” by William Zinsser is a bestselling textbook that serves as a comprehensive guide to writing nonfiction. Published in 1976 by HarperCollins, this informal guide covers a variety of language arts and disciplines, focusing on rhetoric and narrative techniques for adult audiences. With 160 pages of practical advice and insights, Zinsser’s book is a valuable resource for anyone looking to improve their writing skills in the realm of nonfiction.