Murphy, Tom
Reclaiming the sky: 9/11 and the untold story of the men and women who kept America flying
American Management Association, 2007
 eBooks
Brink, Randall
Lost star : the search for Amelia Earhart
Bloomsbury, 1994
 Buku Teks SO
The American Plutarch: 18 lives selected from the Dictionary of American biography
edited by Edward T. James
Charles Scribner`s Sons, 1964
 Buku Teks SO
Rossiter, Clinton, 1917-1970
Marxism : the view from America
Harcourt Brace, 1960
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Powell, Anthony, 1905-2000
From a view to a death
London John Lehmann 1948
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