ISBN: 978-4-88319-502-2// ISBN: 9784883195022Year of publication: 2009Publisher: 3A CorporationNumber of pages: 146 (Main book ) + 27 (answer key)Languages: Japanese Country of origin: Japan
Otasuke Task (Includes CD-ROM)ISBN: 978-4-87424-401-2 // ISBN: 9784874244012Year of publication: 2008Publisher: KurosioNumber of pages: 263Languages: JapaneseCountry of origin: Japan
ISBN: 978-48-8319-580-0 // ISBN: 9784883195800Year of publication: 2011Publisher: 3A CorporationNúmero de páginas: 244Languages: Japanese Country of origin: Japan
ISBN: 978-1-138-29265-9 // ISBN: 9781138292659Year of publication: 2018Publisher: RoutledgeNumber of pages: 169Languages: English Country of origin: United Kingdom
ISBN: 9784874243596// ISBN: 978-4-87424-359-6Year of publication: 2006Publisher: KurosioNumber of pages: 144Languages: JapaneseCountry of origin: Japan
ISBN: 978-4-87424-392-3 // ISBN: 9784874243596Year of publication: 2007Publisher: KurosioNumber of pages: 163Languages: JapaneseCountry of origin: Japan
ISBN: 978-4-87424-299-5 // ISBN: 9784874242995Year of publication: 2004Publisher: KurosioNumber of pages: 77Languages: JapaneseCountry of origin: Japan
ISBN: 978-48-7424-535-4 // ISBN: 9784874245354Year of publication: 2011Publisher: KurosioNumber of pages: 239Languages: JapaneseCountry of origin: Japan
ISBN: 978-48-74246-36-8 // ISBN: 9784874246368Year of publication: 2014Publisher: KurosioNumber of pages: 225Languages: JapaneseCountry of origin: Japan
ISBN: 978-48-74244-96-8 // ISBN: 9784874244968Year of publication: 2010Publisher: KurosioNumber of pages: 249Languages: JapaneseCountry of origin: Japan
ISBN: 978-48-90963-49-2 // ISBN: 9784890963492Year of publication: 2016Publisher: KurosioNumber of pages: 216Languages: JapaneseCountry of origin: Japan
ISBN: 978-48-7424-615-3 // ISBN: 9784874246153Year of publication: 2014Publisher: KurosioNumber of pages: 284Languages: JapaneseCountry of origin: Japan
ISBN: 978-4-7890-1266-9 // ISBN: 9784789012669Year of publication: 2007 Publisher: The Japan TimesNumber of pages: 233Languages: JapaneseCountry of origin: Japan
ISBN: 978-4-86746-002-3 // ISBN: 9784867460023Year of publication: 2022Publisher: Bonjinsha Co.LTDNumber of pages: 115Language: JapaneseCountry of origin: Japan