Gaya APA
Gray, L., Ismayanti, Y, R. (2008).
Chemistry Matters! Volume 5 : The Periodic Table .
-:
The Brown Reference Group.
Gaya MLA
Gray, Leon., Ismayanti, Yosephine, Ratih.
"Chemistry Matters! Volume 5 : The Periodic Table".
-:
The Brown Reference Group,
2008.
Text.