Teitelbaum, Michael. The story of the X-Men : How it all began / Michael Teitelbaum. - London : Dorling Kindersley, 2017. - 48 p. : col. ill. ; 23 cm. - Dorling Kindersley readers. 4. Proficient readers . ISBN: 0751327034 (pbk.) : Subjects--Topical Terms: X-Men (Fictitious characters).--Juvenile literature.