Shankman, Peter. Zombie loyalists : using great service to create rabid fans / Peter Shankman. - New York : Palgrave Macmillan, 2015. - 248 pages : illustrations ; 25 cm ISBN: 9781137279668 (alk. paper) Subjects--Topical Terms: Customer services.Customer relations.Customer loyalty. LC Class. No.: HF5415.5 / .S519Z