Gaya APA
Shirakawa, H., Iori, I. (2011).
Chujokyu o oshieru hitono tame no Nihongo Bunpo Handobbukku .
Tokyo:
3A Network.
Gaya MLA
Shirakawa, Hiroyuki., Iori, Isao.
"Chujokyu o oshieru hitono tame no Nihongo Bunpo Handobbukku".
Tokyo:
3A Network,
2011.
BK.