APA (7th ed.) Citation

Discovery Channel School. (2005). History of the earth (version 2.0.). Discovery Channel School.

Chicago Style (17th ed.) Citation

Discovery Channel School. History of the Earth. version 2.0. s.l: Discovery Channel School, 2005.

MLA (9th ed.) Citation

Discovery Channel School. History of the Earth. version 2.0. Discovery Channel School, 2005.

Warning: These citations may not always be 100% accurate.