Zagula, John. The marketing playbook : five battle-tested plays for capturing and keeping the lead in any market / John Zagula and Rich Tong. - New York : Portfolio, 2004. - xxii, 313 p. : ill. ; 22 cm. Includes index. ISBN: 1591840384 (acid-free paper) LCCN: 2004048540 Subjects--Topical Terms: Marketing.Marketing research.Strategic planning. LC Class. No.: HF 5415 / .Z24 2004