| GMD | Text |
| Classification | 598.47 SCH |
| Publisher | Washington, D.C., National Geographic, 2009 |
| Subject | Penguins -- Juvenile literature. |
| Series | National Geographic science readers. Level 2National Geographic kids |
| Description | 31 p. : col. ill., col. map ; 23 cm. |
| ISBN | 9781426304262 |