I was able to perfectly handle sleep training with these two books. They were my parenting bible! The sleep guide has some scratches on the cover from being read, but the inside is clean. A guidebook to support comfortable sleep for babies and mothers. - Book Title: Akachan to Okaasan no Kaimin Kouza (Baby and Mother's Comfortable Sleep Course) - Book Title: Akachan ni mo Mama ni mo Yasashii Anmin Guide (Gentle Sleep Guide for Babies and Mothers) - Publisher: Kanki Publishing - ISBN: 978-4-7612-6797-1 - Price: 1300 yen Thank you for looking.