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Citace podle Chicago (17th ed.)National Center for Construction Education and Research (U.S.). Heavy Equipment Operations: Level One : Test Booklet. Upper Saddle River, NJ: Prentice Hall, 2005.
Citace podle MLA (8th ed.)National Center for Construction Education and Research (U.S.). Heavy Equipment Operations: Level One : Test Booklet. Prentice Hall, 2005.
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