APA Style
Walker, Gabrielle.. (2003).
Snowball Earth : the story of the great global catastrophe that spawned life as we know it .
New York:
Crown publishers.
Chicago Style
Walker, Gabrielle..
Snowball Earth : the story of the great global catastrophe that spawned life as we know it.
New York:
Crown publishers,
2003.
.
MLA Style
Walker, Gabrielle..
Snowball Earth : the story of the great global catastrophe that spawned life as we know it.
New York:
Crown publishers,
2003.
.
Turabian Style
Walker, Gabrielle..
Snowball Earth : the story of the great global catastrophe that spawned life as we know it.
New York:
Crown publishers,
2003.
.