Bugajski, Janusz
Westview Press, 1989
Buku Teks
Loveday, George
Longman, 1995
Buku Teks
edited by Marc Joye and Michael Tunstall
Springer-Verlag, 2012
eBooks
Chen, Tinghuai
Springer-Verlag , 1992
Buku Teks
Jakub Breier, Xiaolu Hou, Shivam Bhasin, editors
Springer Nature, 2019
eBooks