Singhs KS., Harban , author
LexisNexis, 2011
Buku Teks
DeFranco, Agnes L., 1961-, author
John Wiley & Sons, 2007
Buku Teks
Ofori, George
Singapore University Press, 1990
Buku Teks
Morgan, D. Bryan, author
[RIBA enterprises, ], 2005
eBooks
Barrie, Donald S., author
McGraw-Hill, 1978
Buku Teks