SpringerLink (Online service) & Forrester, C. (2011). High above: The untold story of Astra, Europe's leading satellite company. Springer eBooks..
Citace podle Chicago (17th ed.)SpringerLink (Online service) a Chris Forrester. "High Above: The Untold Story of Astra, Europe's Leading Satellite Company." Springer EBooks. 2011.
Citace podle MLA (9th ed.)SpringerLink (Online service) a Chris Forrester. "High Above: The Untold Story of Astra, Europe's Leading Satellite Company." Springer EBooks., 2011.
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