University of Chicago, Graduate Library School , 1970
Buku Referensi
Facts On File, 1978
Buku Teks
Halberstam, David
New York Alfred A. Knopf 1988,
Buku Teks
Kennedy, John F.
Harper & Row Pub., 1964
Buku Teks SO
Rowell, S.F.
Melbourne University Press, 1974
Buku Teks SO