Rose, Peter S., author
Irwin, 2003
Buku Teks
Rose, Peter S., author
McGraw-Hill, 2008
Buku Teks
Boyle, Alan, author
Oxford University Press, 2007
Buku Teks
Davies, W.H.
J. Cape,, 1927
Buku Teks
Martin, William J., author
Brookfield, Vt., USA : Gower,, 1995.
Buku Teks