| Business Finance for Managers | | | | 2002 |
| See for example, Mundt, K., Dawes, J. and Sharp, B. (2003) An Investigation of Multi-product Loyalty in Financial Services, Australia and NZ Marketing Academy Conference 2003 Proceedings, University of South Australia, Adelaide, or EMEA Retail Banking Study, SAP,
http://www.sap.com/uk/images/bankinginsight/bankingstudy.pdf
, 2005. | | | | |
| Retail Sales Monitor, BRC-KPMG, January 2009. | | | | |
| Pitney Bowes/Marketing UK. (2004) The Customer: Prospect Ratio, March 2004. | | | | |
| Mertz, S.A., Pang, C. and Dharmasthira, Y. (2007) CRM Software, Worldwide, 2006–2011 Update. Misc: 13 August. | | | | |