Michael Fisher, editor
[, Springer-Verlag], 2012
eBooks
Gass, Susan M., author
Routledge, 2017
Buku Teks
Medhi, Jyotiprasad, author
Wiley Eastern, 1982
Buku Teks
King, Chris, author
Longman, 1992
Buku Teks
Ross, Sheldon M., author
John Wiley & Sons, 1996
Buku Teks