ISBN: 978-4-87424-337-4 // ISBN: 9784874243374Year of publication: 2006Publisher: KurosioNumber of pages: 239 (Main book ) + 23 Languages: English and JapaneseCountry of origin: Japan
ISBN: 978-4-87424-513-2 // ISBN: 9784874245132Year of publication: 2011Publisher: KurosioNumber of pages: 312 (Main book ) + 20 (audio transcripts)Languages: English and JapaneseCountry of origin: Japan