Chielens, Edward E., author
Gale Research, 1975
Buku Teks
Cassara, Ernestt, author
Gale Research Coompany, 1977
Buku Teks
Blazek, Ron, author
Libraries Unlimited, 2000
Buku Referensi
Antony, Arthur, author
John Wiley & Sons, 1979
Buku Teks
Keaveney, Sydney Starr, author
Gale Research Co., 1974
Buku Teks