Arnold, Thurman Wesley, author
Blue Ribbon Books, 1937
Buku Klasik
Rostow, Walt Whitman, author
Cambridge University Press, 1963
Buku Teks
Rostow, Walt Whitman, author
Cambridge University Press, 1999
Buku Teks
Rostow, Walt Whitman, author
Cambridge University Press, 1963
Buku Teks
Emmot, Bill, author
Allen Lane, 2003
Buku Teks