HUGHES, T. (1995). Quality Assurance A Frame Work To Build On. Black Well Science.
Lua i Stíl Chicago (17ú heag.)HUGHES, Terry. Quality Assurance A Frame Work To Build On. Black Well Science, 1995.
Lua MLA (8ú heag.)HUGHES, Terry. Quality Assurance A Frame Work To Build On. Black Well Science, 1995.
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