Mitchell, Anne M.
Neal-Schuman Publishers, 2005
Buku Referensi
Stielow, Frederick
Neal-Schuman, 2003
Buku Teks
Turock, Betty J.
Neal-Schuman Publishers, 1992
Buku Teks
Curzon, Susan Carol
Facet Publishing, 2006
Buku Teks
Newlen, Robert R.
Neal-Schuman Publishers, 2006
Buku Teks