The Pocket Style Manual by Diana T. Hacker is a compact grammar book focusing on English grammar. Published by St. Martin’s Press in 1999, this trade paperback edition measures 8.4 inches in length, 4.3 inches in width, and 0.5 inches in height. With 187 pages, this manual provides essential guidelines and rules for improving writing skills in English. The author’s expertise and clarity make it a valuable resource for students and professionals looking to enhance their proficiency in grammar and writing.