-American Academy of Pediatrics Parenting Encyclopedia (6th Edition), page 72: How to help your baby turn over from prone position to supine position. The steps and skills of baby rollover are introduced in detail.
-Conduct rolling training in Cui Yutao Education Park before 1 year old. In this video, Dr. Cui Yutao explained in detail how to train the baby to turn over before 1
-How to train a three-month-old baby to turn over? In this video, Chen Da shared her experience and taught everyone how to train a three-month-old baby to turn over.