In, Ku Kim-Marshall, author
Munhwasa, 2008
Buku Teks
Miller, Edwin L., author
John Wiley & Sons, 2008
Buku Teks
Hasegawa, Noriyoshi, author
Prgeone, 2006
Buku Teks
Hasegawa, Noriyoshi
Prgeone, 2007
Buku Teks
APA Publications, [date of publication not identified]
Buku Referensi