For more than 60 years, instructors and their students have looked to Penguin trade paperbacks for state-of-the-art scholarship, accessibility, and fair prices. Longman, Penguin's sister company, aims to meet those same expectations with textbooks in our Penguin Academics series. We've created the Penguin Academics series with ease of use in mind-the books are conveniently portable and highly readable, with engaging typefaces and interior designs. Concise yet thorough in their coverage of the basics, Penguin Academics titles are ideal for use either by themselves or in combination with other books. A list of related Penguin paperbacks can be found at the back of this and every Penguin Academics title.