APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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