Blotter, P. Thomas
John Wiley & Sons, 1981
Buku Teks
Davis, Mackenzie Leo, 1941-, author
McGraw-Hill, 2008
Buku Teks
Davis, Mackenzie Leo, 1941-, author
McGraw-Hill, 2013
Buku Teks
Watt, Helen, author
Routledge , 2000
Buku Teks
Bart Streumer.
Wiley-Blackwell , 2014
Buku Teks