Citace podle ČSN ISO 690

Jeffery, Mark. ROI for a customer relationship management initiative at GST [online]. London: Kellogg School of Management, 2006. SAGE business cases [cit. 2025-06-23]. ISBN 9781071925959. Dostupné z: https://sk.sagepub.com/cases/roi-for-a-customer-relationship-management-initiative-at-gst.

Citace podle APA

Jeffery, M. (2006). ROI for a customer relationship management initiative at GST. London: Kellogg School of Management.

Styl Chicago

Jeffery, Mark. ROI for a Customer Relationship Management Initiative At GST. London: Kellogg School of Management, 2006.

Citace podle MLA

Jeffery, Mark. ROI for a Customer Relationship Management Initiative At GST. London: Kellogg School of Management, 2006.

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