BOARD OF EDITORS. (1983). ACTIVE ENG. GRAMMAR & COMPOSITION. MACMILLAN.
Lua i Stíl Chicago (17ú heag.)BOARD OF EDITORS. ACTIVE ENG. GRAMMAR & COMPOSITION. BOMBAY: MACMILLAN, 1983.
Lua MLA (9ú heag.)BOARD OF EDITORS. ACTIVE ENG. GRAMMAR & COMPOSITION. MACMILLAN, 1983.
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