based on the bestselling books by Doreen Cronin and Harry Bliss. based on the creation of Doreen Cronin and Harry Bliss based on the bestselling books by John Grogan "Based on the bestselling books by John Grogan." Based on the bestselling books by Rob Scotton, text by Laura Driscoll based on the bestselling books by Rob Scotton based on the best selling books by Jackie Urba based on the best selling books by Jackie Urbanovic based on the bestselling books of Rob Scotton ; text by Amy Hsu Lin "Based on the bestselling books by Jackie Urbanovic."