These books were often based on the stories he had told to children over many years.
Despite taking some ideas from others, the books are not based on any other school of teaching.
However, the book is based on the lives of people Johnson knew and from events in his own life.
The book is based on the making of the film shooting.
A book, based on the show, was published in May 2007.
Together they wrote several books, often based on his life experiences.
The book is based on interviews with 125 other leaders.
The book is based on interviews with more than 300 people involved in the campaign.
This book is based on the child's life from ages 4 to 12.
According to the authors, the book is based on fact.