A concise guide to the book, its place in the calculus canon, and how you can legally obtain it. 1. What the Book Is Title: The Calculus (7th edition) Author: Louis Leithold Publisher: Prentice Hall (now Pearson) – 1993 (7th ed.) Length: ~1,200 pages, 16 chapters, ~1,600 exercises Audience: First‑year university students, AP Calculus teachers, self‑learners who want a rigorous yet readable treatment of single‑variable calculus.