Duncan, J. M., Thorpe, B., & Sumner, P. (1990). Quality assurance in construction / John M. Duncan, Brian Thorpe, Peter Sumner. Gower.
Chicago Style (17th ed.) CitationDuncan, John M., Brian Thorpe, and Peter Sumner. Quality Assurance in Construction / John M. Duncan, Brian Thorpe, Peter Sumner. Aldershot: Gower, 1990.
MLA (9th ed.) CitationDuncan, John M., et al. Quality Assurance in Construction / John M. Duncan, Brian Thorpe, Peter Sumner. Gower, 1990.
Warning: These citations may not always be 100% accurate.