APA Style
Clifford, T. (2009).
Rourke's world of science encyclopedia Volume 4 : Earth science (Volume 4 : Earth science).
Florida:
Kakilangit Kencana.
MLA Style
Clifford, Tim.
"Rourke's world of science encyclopedia Volume 4 : Earth science".
Volume 4 : Earth science
Florida:
Kakilangit Kencana,
2009.
Text.