APA Style
Philips, OM.. (1968).
The heart of the earth .
America:
Freeman, cooper & company.
Chicago Style
Philips, OM..
The heart of the earth.
America:
Freeman, cooper & company,
1968.
Text.
MLA Style
Philips, OM..
The heart of the earth.
America:
Freeman, cooper & company,
1968.
Text.
Turabian Style
Philips, OM..
The heart of the earth.
America:
Freeman, cooper & company,
1968.
Print.