Salisbury, Harrison E., author
Atheneum, 1965
Buku Teks
Skrine, Francis Henry, 1847-1933, author
Cambridge University Press, 2013
Buku Teks
Vernadsky, George
At The Clarendon Press, 1959
Buku Teks
Yergin, Daniel
Random House, 1993
Buku Teks
Salisbury, Harrison E., author
Harper & Row , 1962
Buku Teks