TY - BOOK AU - Wiersema,Frederik Derk,ed TI - Customer service : extraordinary results at Southwest Airlines, Charles Schwab, Lands' End, American Express, Staples, and USAA AV - HF5415.5 C877 PY - 1998/// CY - New York, N.Y. PB - HarperBusiness KW - CUSTOMER SERVICES KW - CASE STUDIES ER -