Clancey, Richad, author
Sweet & Maxwell, 2011
Buku Teks
Schwartz, Bernard, author
Pitman, 1950
Buku Teks
Jones, David P., author
Carswell, 2009
Buku Teks
Lorch, Robert S., author
Wayne State University Press, 1969
Buku Teks
Carroll, Alex, 1947-, author
Pearson Longman, 2007
Buku Teks