Bostwick, Burdette E.
John Wiley & Sons, 1980
Buku Teks
Newlen, Robert R., author
Neal-Schuman Publishers, 2006
Buku Teks
Moore, Nick, author
Facet Publishing, 2006
Buku Teks
Beardsmore, Caroline. author
Wiley-Blackwell,, 2013
Buku Teks
Mitchell, Anne M., author
Neal-Schuman Publishers, 2005
Buku Referensi