J. Whitaker & Sons, 1995
Buku Referensi
J. Whitaker & Sons, 1989
Buku Referensi
Alan Armstrong & Associates, 1987
Buku Referensi
edited by Barry Turner
Macmillan and The Free Press, 1992
Buku Referensi
Harrold, Ann
Library Association, 1986
Buku Referensi