Luther, William M The Marketing plan : How to prepare and implement it / William M. Luther. - 4th ed. - New York : AMACOM, C2011. - xi, 292 p. : ill. ; 23 cm. Includes bibliographical references and index. ISBN: 9780814416938 Subjects--Topical Terms: Marketing. LC Class. No.: HF5415 / .L87 2011