Foster, Lois E., author
Prentice-Hall, 1981
Buku Teks
M.K. (Muhammad Kamil) Tadjudin, author
UI-Press, 1998
Buku Teks
Artikel Jurnal
edited by Victor C.X. Wang
Information Science Reference, 2014
Buku Teks
Tooley, James, author
Continuum Studies Education Policy, 2000
Buku Teks