The service edge :
101 companies that profit from customer care /
by Ron Zemke with Dick Schaaf ; foreword by Tom Peters.

APA Citation

Zemke, R., Schaaf, D. (1989). The service edge: 101 companies that profit from customer care. New York, N.Y.: New American Library.

MLA Citation

Zemke, Ron, and Dick Schaaf. The Service Edge: 101 Companies That Profit From Customer Care. New York, N.Y.: New American Library, 1989.

Warning: These citations may not always be complete (especially for serials).