Nkonde, Zillah. An assessment of outsourcing of offshore call centres on customer service : a case of Barclays bank Zambia / Zillah Nkonde. - Lusaka: The University of Zambia, 2020. - xiv, 97 pages : illustrations. Includes bibliographical references. Subjects--Topical Terms: Call centers.Call centres--Offshore outsourcing.Contracting out.