Jordan, Peter, author
Ashgate, 2002
Buku Teks
Rubin, Richard E., author
Neal-Schuman Publishers, Inc. , 1998
Buku Teks
Rubin, Richard, 1949-, author
Neal-Schuman, 2016
Buku Teks
Reitz, Joan M., author
Libraries Unlimited, 2004
Buku Referensi
Henczel, Susan, author
Saur Verlag, 2001
Buku Teks