edited by Andrew Booth and Anne Brice
Facet Publishing, 2004
Buku Referensi
Dority, G. Kim
Libraries Unlimited, 2006
Buku Teks
Parker, Christopher Charles
Butterworths, 1960
Buku Teks
Indiana Purdue University Press, 2014
Buku Teks
Parker, Christopher Charles
Butterworths, 1986
Buku Teks