McCall, J., Richards, P. and Walters, G (1977) Factors in software quality, Vols I-III, Rome Aid Defence Centre, Italy.

Boehm, B. (1978) Characteristics of Software Quality, North Holland, with J.R. Brown, H. Kaspar, M. Lipow, G. McLeod, and M. Merritt.

Pressman. R, (2000) Adapted by Darrel Ince, Software Engineering: A Practitioner’s Approach (European edition) McGraw-Hill Internationsl, Berkshire, UK

Kan, S. (2002) Metrics and models in Software Quality Engineering, Addison-Wesley

Boehm, B.; See extensive list of readings

Fitzpatrick, R. (1996) Software Quality: Definitions and Strategic Issues, Staffordshire University, School of Computing Report

ISO 9000 international standards

Scholarly articles for Nielsen, J.

http://www.google.com/scholar?q=nielsen,+J&hl=en&lr=&rls=GGLC,GGLC:1970-01,GGLC:en&sa=N&tab=ss&oi=scholart

http://www.comp.dit.ie/rfitzpatrick/papers/quality01.pdf