Atarashii Nihongo nôryoku shiken gaido bukku (Guide Book) gaiyôban to mondairei shû N4, N5 hen
Nihongo charenji : bunpô to yomu renshû : N4 Nihongo nôryoku shiken taisaku = Nihongo challenge :grammar and reading practice: preparation for the Japanese language proficiency test
Nihongo charenji : kotoba: N4 Nihongo nôryoku shiken taisaku = Nihongo challenge : vocabulary : preparation for the Japanese language proficiency test
Kreatives Japan : Traditionelle Techniken einfach erklärt
Berurin gaidibukku [=Berlin Guidebook] : Sunao no Berurin zôha kaiteiban