APA
Davies G. A., Fenner R. & Lewis R. (1993). Background to benchmarks. Glasgow: NAFEMS.
Chicago
Davies G A, Fenner R.T and Lewis R.W. 1993. Background to benchmarks. Glasgow: NAFEMS.
Harvard
Davies G. A., Fenner R. and Lewis R. (1993). Background to benchmarks. Glasgow: NAFEMS.
MLA
Davies G A, Fenner R.T and Lewis R.W. Background to benchmarks. Glasgow: NAFEMS. 1993.