Gaya APA
Charman, A.
(2007).
Mengenal Ilmu Unsur Alam: Air
.
Danbury:
Grolier International Inc.
Gaya MLA
Charman, Andrew.
"Mengenal Ilmu Unsur Alam: Air".
Danbury:
Grolier International Inc,
2007.
Text.