1. Abbott, R. (1991), The Process of Improvement: Your Total Quality Management Tool Bag, IBM.
2. APQC (2004), “APQC process classification framework”, APQC, available at: www.apqc.org/portal/apqc/ksn/PCF_Complete_May_5_2004.pdf?paf_gear_id= contentgearhome&paf_dm = full&pageselect = contentitem&docid = 115313 (accessed 30 December).
3. BPMI.org (2001), “Business process modelling language specification 1.0”, available at: www.bpmi.org/ (accessed 2 June 2005).
4. BPMI.org (2004), “Business process modelling notation (BPMN), business process management initiative”, available at: www.bpmi.org/ (accessed 4 January 2005).
5. Checkland, P. (1981), Systems Thinking, Systems Practice, Wiley, New York, NY.