LEEB DONNA; LEEB STEPHEN. (2004). OIL FACTOR: PROTECT YOURSELF ......ENERGY CRISIS. WARNER BOOK.
Lua i Stíl Chicago (17ú heag.)LEEB DONNA; LEEB STEPHEN. OIL FACTOR: PROTECT YOURSELF ......ENERGY CRISIS. NEW YORK: WARNER BOOK, 2004.
Lua MLA (9ú heag.)LEEB DONNA; LEEB STEPHEN. OIL FACTOR: PROTECT YOURSELF ......ENERGY CRISIS. WARNER BOOK, 2004.
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