Osborne, Milton, author
Allen& Unwin , 2000
Buku Teks
edited by Johannes Dragsbaek Schmidt, Jacques Hersh; Niels Fold
Longman, , 1997
Buku Teks
Strange, Morten
Periplus Editions, 1998
Buku Referensi
Japan : Kyoto University, 2007,
Majalah, Jurnal, Buletin
editor, Tobias Rettig, Karl Hack
Routledge, 2009
Buku Teks