Flahault, D.
World Health Organization, 1988
Buku Teks
Libraries Unlimited, 2000
Buku Teks SO
Lear, Brett W.
[American Library association, American Library association], 2002
eBooks
Gilman, Isaac
Chandos Publishing, 2013
eBooks
Graduate School of Library, Information and Media Studies University of Tsukuba, 2002
Majalah, Jurnal, Buletin