Lewis, Bernard, author
C. Timling, 1963
Buku Teks
Hadar, Leon T., author
Leon Hadar, 2005
Buku Teks
Washington Government Printing Office, 1955
Buku Teks
Laqueur, Walter Z.
Routledge & Kegan Paul , 1959
Buku Teks
Campbell, John C., author
Frederick A. Preger, 1960
Buku Teks