CLAGGETT J R. (1987). USA VISA WINDOW (3.). PRENTICE -HALL INTERNATIONAL, INC.
Lua i Stíl Chicago (17ú heag.)CLAGGETT J R. USA VISA WINDOW. 3. NEW JERSEY,USA: PRENTICE -HALL INTERNATIONAL, INC, 1987.
Lua MLA (9ú heag.)CLAGGETT J R. USA VISA WINDOW. 3. PRENTICE -HALL INTERNATIONAL, INC, 1987.
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