PERRY WILLIAM E. (2000). EFFECTIVE METHODS FOR SOFTWARE TESTING. WILE-COMPUTER.
Lua i Stíl Chicago (17ú heag.)PERRY WILLIAM E. EFFECTIVE METHODS FOR SOFTWARE TESTING. NEW YORK: WILE-COMPUTER, 2000.
Lua MLA (9ú heag.)PERRY WILLIAM E. EFFECTIVE METHODS FOR SOFTWARE TESTING. WILE-COMPUTER, 2000.
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