Chaffey, Dave Digital Marketing Excellence : Planning, Optimizing and Integrating Online Marketing / Dave Chaffey , PR Smith. - 6th Edition - London ; New York : Routledge, 2023. - 638p. : Includes bibliographical references and index. PB ISBN: 978-0367444754 Subjects--Topical Terms: Internet marketing. Dewey Class. No.: 658.872 / CHA