Roberts, G. W. (1995). Quality planning, control, and improvement in research and development. Marcel Dekker.
Lua i Stíl Chicago (17ú heag.)Roberts, Gorge W. Quality Planning, Control, and Improvement in Research and Development. New York: Marcel Dekker, 1995.
Lua MLA (8ú heag.)Roberts, Gorge W. Quality Planning, Control, and Improvement in Research and Development. Marcel Dekker, 1995.
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