Some people just won't take the hint when it's time to go to bed, but Marvin K. Mooney eventually gets the message! This fun tale by Dr. Seuss is aimed at young readers and remind them that they sometimes have to do what they are told! The new covers incorporate guidance on reading levels: Blue Back Books are for parents to share with young children, Green Back Books are for budding readers to tackle on their own, and Yellow Back Books are for older, more fluent readers to enjoy. This book belongs to the Green Back Book range.