Petersen, Christian
Gower, 1994
Buku Teks
Kyoung, Bae-min 1934-, author
Yonsei University Press , 2005
Buku Teks
Beheim-Schwarzbach, Martin
Hamburg Rowohlt 1964
Buku Teks
Oxford University Press, 1997
Buku Referensi
The Dushkin publishing group, 1989
Buku Teks