Casteleyn, Mary, author
Bowker Saur , 1993
Buku Teks
edited by Margaret Oldroyd
Library Association , 1997
Buku Teks
Cuming, Maurice W.
Heinemann, 1971
Buku Teks
consultant editor, Michael Armstrong
AP Information Services, 1997
Buku Referensi
edited by Colin Harris, Brian Clifford
British Library, 1985
Buku Teks