School Library Association , 1972
Buku Teks SO
Norman, Sandy
Library Association Publishing, 1996
Buku Referensi
edited by Soekarman, S.S. Wardaya
The ASEAN Committee on Culture and Information , 1992
Buku Teks SO
Intner, Sheila S.
Libraries Unlimited, 2001
Buku Teks SO
by Eileen Armstrong ...[and others] ; editor, Lynn Barret, Jonathan Douglas
Facet, 2004
Buku Teks SO