Jones, Andrew, author
Radcliffe Publishing, 2009
Buku Teks
Pol, Louis G., author
Plenum Press, 1992
Buku Teks
Twisk, Jos W.R., author
Cambridge University Press, 2006
Buku Teks
Kennedy, Peter, author
MA Blackwell Publishing, 2008
Buku Teks
Hicks, Lanis L., author
Jones & Bartlett Learning, 2014
Buku Teks