Patrick, Gay D.
Neal-Schuman, 1992
Buku Referensi
Curzon, Susan Carol
Facet Publishing, 2006
Buku Teks
Turock, Betty J.
Neal-Schuman Publishers, 1992
Buku Teks
Ross, Catherine Sheldrick
Library Association Publishing, 1998
Buku Teks
Newlen, Robert R.
Neal-Schuman Publishers, 2006
Buku Teks