THE BOOK PARADISE. (2011). AWESOME FACTS ABOUT INVENTORS AND INVENTIONS. THE BOOK PARADISE.
Chicago-referens (17:e uppl.)THE BOOK PARADISE. AWESOME FACTS ABOUT INVENTORS AND INVENTIONS. THE BOOK PARADISE, 2011.
MLA-referens (9:e uppl.)THE BOOK PARADISE. AWESOME FACTS ABOUT INVENTORS AND INVENTIONS. THE BOOK PARADISE, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.