Tarwaka
UBIBRA Press, 2004
Buku Teks
Pheasant, Stephen
Macmillan, 1991
Buku Teks
edited by Amit Bhattacharya, James D. McGlothlin
FL : CRC Press,, 2012
Buku Teks
McKeown, Celine
CRC Press, 2008
Buku Teks
Oborne, David J.
John Wiley & Sons, 1995
Buku Teks