Longman, 2000
Buku Teks
Lee, Dong-ha, author
Jimoondang Publishing Company, 2003
Buku Teks
Sadler, Simon, author
MIT Press, 2001
Buku Teks
Richard T. LeGates, Frederic Stout, editor
Routledge, 2000
Buku Teks
Shaw, Robert, author
Routledge, 2018
Buku Teks