Gaya APA

Gifford, C., Bedoyere, C, D, L. (2011). Discover The Extreme World: Bursting with Amazing Facts! . Essex: Discovery Channel.

Gaya MLA

Gifford, Clive., Bedoyere, Camilla, De, La. "Discover The Extreme World: Bursting with Amazing Facts!". Essex: Discovery Channel, 2011. Text.