edited by H.V. Hodson
Longman, 1982
Buku Referensi
edited by H.V. Hodson
Longman, 1983
Buku Referensi
YEAR Incorporated, [date of publication not identified]
Buku Teks
American Library Association, 1981
Buku Referensi
American Library Association, 1980
Buku Referensi