Dorian, A.F., author
Elsevier Scientific Publishing Company, 1981
Buku Referensi
Harrington, Jon, author
Prentice-Hall, 1991
Buku Teks
Reynolds, George Walter, 1944-, author
Cengage Learning, 2019
Buku Teks
American Library Association,
Majalah, Jurnal, Buletin
Earl, Michael J., author
Prentice-Hall, 1989
Buku Teks