New York, NY, US : Scholastic, 2011 , This set includes: 1 large Earth with adjustable arms, 1 large ¨ Love Our Planet!¨ Banner, 4 Help-the-Earth charts, 8 Conservation slogans. | Material didáctico para el profesor. | Teaching resource guide. 978-0-545-03992-5
Discovery Channel, | /s.l./ | U.S.A. : | 2010. . 1 DVD 84 min., son., col.
By Attenborough, David.. BBC Earth, | U.S.A. : | 2010. . 4 DVD 586 min., son., col. 1-4198-8857-9
By Senior, Kathryn. New York, NY, US : Franklin Watts, | New York, NY, US | 2000 . 32 p. 0-531-11879-7
By Twist, Clint. London, GB : . 29 p., il. 978-1-86199-183-6
New York, NY, USA : Oxford University Press, 2011 . 32 p., il. 978-0-19-848786-9