Collins, David, author
Cambridge University Press, 2017
Buku Teks
Sornarajah, M., author
Cambridge University Press, 1994
Buku Teks
Reinisch, August, author
Cambridge University Press, 2020
eBooks
Stephan W. Schill, author
Cambridge University Press, 2010
eBooks
Lowenfeld, Andreas F., author
Matthew Bender, 1982
Buku Teks