APA Style
The Key to Earth History. (2001).
New York:
John We.
Chicago Style
The Key to Earth History.
2nd ed.
New York:
John We,
2001.
Text.
MLA Style
The Key to Earth History.
2nd ed.
New York:
John We,
2001.
Text.
Turabian Style
The Key to Earth History.
New York:
John We,
2001.
Print.