Anthea Tinker...[et al.]
HMSO , 1994
Buku Teks
Davenport, Neil, author
Kenneth Mason, 1979
Buku Teks
Rose, Richard, 1933-, author
Chatham House Publishers, 1982
Buku Teks
Library Association, 1989
Buku Referensi
Harrold, Ann
Library Association, 1986
Buku Referensi