Transformers Energon Offical Guidebookde Michael TeitelbaumMateriasTransformers (Fictitious characters)Transformers, Energon (Television program)Juvenile literatureHandbooks, manualsTransformers (fictitious characters), fictionChildren's fictionShort storiesEdiciones (1)Transformers Energon Offical Guidebook (2004)Reader's Digest · inglés · ISBN 9780794405045