HERTST, J. (2009). MAJOR INVENTIONS THROUGH HISTORY: THE HISTORY OF TRANSPORT. LERNER BOOKS.
Lua i Stíl Chicago (17ú heag.)HERTST, JUDITH. MAJOR INVENTIONS THROUGH HISTORY: THE HISTORY OF TRANSPORT. LONDON: LERNER BOOKS, 2009.
Lua MLA (9ú heag.)HERTST, JUDITH. MAJOR INVENTIONS THROUGH HISTORY: THE HISTORY OF TRANSPORT. LERNER BOOKS, 2009.
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