ISBN: 978-4-88319-728-6 // ISBN: 9784883197286Year of publication: 2016Publisher: 3A CorporationNumber of pages: 179 (Main book ) + 45 (Answer key)Languages: Japanese, EnglishCountry of origin: Japan
ISBN: 978-48831-950-91 // ISBN: 9784883195091 Year of publication: 2009Publisher: 3A CorporationNumber of pages: 149 (Main book ) + 75 (Exercises resolved)Languages: Japanese, English, Chinese, KoreanCountry of origin: Japan