Carlson, Diane H., author
McGraw-Hill , 2008
Buku Teks
Plummer, Charles C., author
McGraw-Hill, 2013
Buku Teks
Plummer, Charles C., author
WBC, 1991
Buku Teks
Hamblin, W. Kenneth (William Kenneth), 1928-, author
Burgen Publishing, 1985
Buku Teks
Jones, Norris W., author
McGraw-Hill, 2001
Buku Teks