Finkle, Jason L., author
John Wiley & Sons, 1968
Buku Teks
Finkle, Jason L., author
John Wiley & Sons, 1966
Buku Teks
Tan, Gerald, author
Times Academic Press, 2000
Buku Teks
McRobert, Kenneth
McClelland and stewart, 1976
Buku Teks
McMichael, Philip, 1947-, author
Sage, 2012
Buku Teks