Artikel Jurnal
American Library Association,
Majalah, Jurnal, Buletin
Lowell, Mildred Hawksworth, author
The Scarecrow Press, 1968
Buku Teks
edited by Margaret Brittin
Routledge , 1992
Buku Teks
edited by David Baker and Wendy Evans
Emerald, 2017
eBooks