Carmen Gil is the award-winning author of more than 80 children's books, including Celeste, la estrella marina, El hada Roberta, !Que miedo!, Story of a Cockroach, It's a Pain to Be a Princess! and the awardwinning La sonrisa de Daniela. Monica Carretero is an author and an award-winning illustrator. Her books include Little Cloud Lamb, the Handbooks series, the Mini-animalist series, the Clucky the Hen series and Yago's Heartbeat. The Witches Handbook won Best Children's Picture Book at the 2012 Latino Book Awards.