Stielstra, Greg. PyroMarketing : the four-step strategy to ignite customer evangelists and keep them for life / Greg, Stielstra. - 1st edition. - New York : Harper Business, c2005. - x, 238p : ill ; 21cm. Includes bibliographical references (p. 231-238) Open access. ISBN: 0060776706 Subjects--Topical Terms: Marketing.